Our publications and preprints may also be found online at


V. M. Frey, S. Mavadia, L. M. Norris, W. de Ferranti, D. G. Lucarelli, L. Viola, and M. J. Biercuk, ”Application of optimal band-limited control protocols to quantum noise sensing,” Nature Communications, in press (2017).

A. Alase, E. Cobanera, G. Ortiz, and L. Viola, ”A generalization of Bloch’s theorem for arbitrary boundary conditions: Theory,” Physical Review B 96, 195133 (2017). Selected as Editors’ Suggestion.

H. Qi, J. Dowling, and L. Viola, ”Optimal digital dynamical decoupling for general decoherence via Walsh modulation, Quantum Information Processing 16, 272/1–18 (2017).

P. D. Johnson, F. Ticozzi, and L. Viola, “Exact stabilization of entangled states in finite time by dissipative quantum circuits,” Physical Review A 96, 012308 (2107).

F. Ticozzi and L. Viola, “Quantum and classical resources for unitary design of open-system evolutions,” Quantum Science & Technology 2, 034001/1–18 (2017).

E. Cobanera, A. Alase, G. Ortiz, and L. Viola, “Exact solution of corner-modified banded block-Toeplitz eigensystems,” Journal of Physics A 50, 195204/1–38 (2017).

G. A. Paz-Silva, L. M. Norris, and L. Viola, “Multi-qubit spectroscopy of Gaussian quantum noise,” Physical Review A 95, 022121/1–26 (2017).


A. Alase, E. Cobanera, G. Ortiz, and L. Viola, “Exact solution of quadratic fermionic Hamiltonians for arbitrary boundary conditions,” Physical Review Letters 117, 076804 (2016).

G. A. Paz-Silva, S.-W. Lee, T. J. Green, and L. Viola, “Dynamical decoupling sequences for multi-qubit dephasing suppression and long-time quantum memory,” New Journal of Physics 18, 073020 (2016).

L. M. Norris, G. A. Paz-Silva, and L. Viola, “Qubit noise spectroscopy for non-Gaussian dephasing environments,” Physical Review Letters 116, 150503 (2016).

P. D. Johnson, F. Ticozzi, and L. Viola, “General fixed points of quasi-local frustration-free quantum semigroups: From invariance to stabilization,” Quantum Information & Computation 16, 0657 (2016).


A. Poudel, G. Ortiz, and L. Viola, “Dynamical generation of Floquet Majorana flat bands in s-wave superconductors,” Europhysics Letters 110, 17004 (2015).

P. D. Johnson and L. Viola, “On state vs. channel quantum extension problems: Exact results for U ⊗ U⊗ U symmetry,” Journal of Physics A 48, 035307 (2015). Selected as Publisher’s pick, and for the Journal of Physics A Highlights of 2015 Collection.


G. A. Paz-Silva and L. Viola, “General transfer-function approach to noise filtering in open-loop quantum control,” Physical Review Letters 113, 250501 (2014).

C. Kabytayev, T. J. Green, K. Khodjasteh, M. J. Biercuk, L. Viola, and K. R. Brown, “Performance of composite pulses under time-dependent noise,” Physical Review A 90, 012316 (2014).

F. Ticozzi and L. Viola, “Quantum resources for purification and cooling: Fundamental limits and opportunities,” Scientific Reports 4, 5192 (2014).

S. Deng, G. Ortiz, A. Poudel, and L. Viola, “Majorana flat bands in s-wave gapless topological superconductors,” Physical Review B 89, Rapid Communication, 140507 (2014).

A. D. Bookatz, P. Wocjan, and L. Viola, “Hamiltonian quantum simulation with bounded controls,” New Journal of Physics 16, 045021 (2014).

F. Ticozzi and L. Viola, “Steady-state entanglement by engineered quasi-local Markovian dissipation: Hamiltonian-assisted and conditional stabilization,” Quantum Information & Computation 14, 0265 (2014).


P. D. Johnson and L. Viola, “Compatible quantum correlations: Extension problems for Werner and isotropic states,” Physical Review A 88, 032323 (2013).

K. Khodjasteh, T. J. Green, J. Sastrawan, D. Hayes, M. J. Biercuk, and L. Viola, “Designing a practical high-fidelity long-time quantum memory,” Nature Communications 4, 2045 (2013).

S. Deng, G. Ortiz, and L. Viola, “Multiband s-wave topological superconductors: Role of dimensionality and magnetic field response,” Physical Review B 87, 205414 (2013).


F. Ticozzi and L. Viola, “Stabilizing entangled states with quasi-local quantum dynamical semigroups,” Philosophical Transactions of the Royal Society A 370, 5259 (2012).

K. Khodjasteh, H. Bluhm, and L. Viola, “Automated synthesis of dynamically corrected quantum gates,” Physical Review A 86, 042329 (2012).

F. Ticozzi, R. Lucchese, P. Cappellaro, and L. Viola, “Hamiltonian control of quantum dynamical semigroups: Stabilization and convergence speed,” IEEE Transactions on Automatic Control 57, 1931 (2012).

T. Erdélyi, K. Khodjasteh, and L. Viola, “The size of exponential sums on intervals of the real line,” Constructive Approximations 35, 123 (2012).

S. Deng, G. Ortiz, and L. Viola, “Majorana modes in time-reversal invariant s-wave topological superconductors, Physical Review Letters 108, 036803 (2012).


D. Hayes, K. Khodjasteh, L. Viola, and M. J. Biercuk, “Reducing sequencing complexity in dynamical quantum error suppression by Walsh modulation,” Physical Review A 84, 062323 (2011).

C. Ramanathan, P. Cappellaro, L. Viola, and D. G. Cory, “Experimental characterization of coherent magnetization transport in a one-dimensional spin system,” New Journal of Physics 13, 103015 (2011).

K. Khodjasteh, V. V. Dobrovitski, and L. Viola, “Pointer states via engineered dissipation,” Physical Review A 84, 022336 (2011).

S. Deng, G. Ortiz, and L. Viola, “Dynamical critical scaling and effective thermalization in quantum quenches: the role of the initial state,” Physical Review B 83, 094304 (2011).

P. Cappellaro, L. Viola, and C. Ramanathan, “Coherent information transfer via highly mixed quantum spin chains,” Physical Review A 83, 032304 (2011).


K. Khodjasteh, T. Erdélyi, and L. Viola, “Limits on preserving quantum coherence using multi-pulse control,” Physical Review A 83, Rapid Communication, 020305 (2011).

R. Blume-Kohout, H. K. Ng, D. Poulin, and L. Viola, “Information-preserving structures: A general framework for quantum zero-error information,” Physical Review A 82, 062306 (2010).

W. G. Brown and L. Viola, “Convergence rates for arbitrary statistical moments of random quantum circuits,” Physical Review Letters 104, 250501 (2010).

T. E. Hodgson, L. Viola, and I. D’Amico, “Towards optimized suppression of dephasing in systems subject to pulse timing constraints,” Physical Review A 81, 062321 (2010).

K. Khodjasteh, D. A. Lidar, and L. Viola, “Arbitrarily accurate dynamical control in open quantum systems,” Physical Review Letters 104, 090501 (2010).

F. Ticozzi and L. Viola, “Quantum information encoding, protection, and correction from trace-norm isometries,” Physical Review A 81, 032313 (2010).


S. Deng, G. Ortiz, and L. Viola, “Anomalous non-ergodic scaling in adiabatic multicritical quantum quenches,” Physical Review B 80, Rapid Communication, 241109 (2009).

W. Zhang, P. Cappellaro, N. Antler, B. Pepper, D. G. Cory, V. V. Dobrovitski, C. Ramananthan, and L. Viola, “NMR multiple quantum coherences in quasi-one-dimensional spin systems: Comparison to ideal spin-chain dynamics,” Physical Review A 80, 052323 (2009).

K. Khodjasteh and L. Viola, “Dynamical quantum error correction of unitary gates with bounded controls,” Physical Review A 80, 032314 (2009).

F. Ticozzi and L. Viola, “Analysis and synthesis of attractive quantum Markovian dynamics,” Automatica 45, 2002 (2009).

K. Khodjasteh and L. Viola, “Dynamically error-corrected gates for universal quantum computation,” Physical Review Letters 102, 080501 (2009).

T. E. Hodgson, L. Viola, and I. D’Amico, “Effect of quantum dot shape on dynamical dephasing suppression in exciton qubits under applied electric field,” Microelectronics Journal 40, 502 (2009).


S. Deng, G. Ortiz, and L. Viola, “Dynamical non-ergodic scaling in continuous finite-order quantum phase transitions,” Europhysics Letters 84, 67008 (2008).

Y. S. Weinstein, W. G. Brown, and L. Viola, “Parameters of pseudo-random quantum circuits,” Physical Review A 78, 052332 (2008).

F. Ticozzi and L. Viola, “Quantum Markovian subsystems: Invariance, attractivity, and control,” IEEE Transactions of Automatic Control 53, 2048 (2008).

T. E. Hodgson, L. Viola, and I. D’Amico, “Decoherence-protected storage of exciton qubits through ultrafast multipulse control,” Physical Review B 78, 165311 (2008).

L. F. Santos and L. Viola, “Advantages of randomization in coherent quantum dynamical control,” New Journal of Physics 10, 083009 (2008).

W. G. Brown, Y. S. Weinstein, and L. Viola, “Quantum pseudo-randomness from cluster-state quantum computation,” Physical Review A 77, Rapid Communication, 040303 (2008).

W. Zhang, N. P. Konstantinidis, V. V. Dobrovitski, B. N. Harmon, L. F. Santos, and L. Viola, “Long-time electron spin storage via dynamical suppression of hyperfine-induced decoherence in a quantum dot,” Physical Review B 77, 125336 (2008).

W. G. Brown, L. F. Santos, D. Starling, and L. Viola, “Quantum chaos, delocalization, and entanglement in disordered Heisenberg spin lattices,” Physical Review E 77, 021106 (2008).

R. Blume-Kohout, H. K. Ng, D. Poulin, and L. Viola, “Characterizing the structure of preserved information in quantum processes,” Physical Review Letters 100, 030501


W. Zhang, V. V. Dobrovitski, L. F. Santos, L. Viola, and B. N. Harmon, “Suppression of electron spin decoherence in a quantum dot,” Journal of Modern Optics 54, 2629 (2007).

S. Boixo, L. Viola, and G. Ortiz, “Generalized coherent states as preferred states of open quantum systems,” Europhysics Letters 79, 40003 (2007). Included in the Editorial Board Highlights of 2007.

W. Zhang, V. V. Dobrovitski, L. F. Santos, L. Viola, and B. N. Harmon, “Dynamical control of electron spin coherence in a quantum dot: A theoretical study,” Physical Review B 75, Rapid Communication, 201302 (2007).

L. Viola and W. G. Brown, “Generalized entanglement as a framework for complex quantum systems: Purity vs delocalization measures,” Journal of Physics A 40, 8109 (2007).

A. Mandilara and L. Viola, “Nilpotent polynomials approach to four-qubit entanglement,” Journal of Physics B 40, S167 (2007).


F. Ticozzi and L. Viola, “Single-bit feedback and quantum dynamical decoupling,” Physical Review A 74, 052328 (2006).

Y. S. Weinstein and L. Viola, “Generalized entanglement as a natural framework for exploring quantum chaos,” Europhysics Letters 76, 746 (2006).

L. Viola and L. F. Santos, “Randomized dynamical decoupling techniques for coherent quantum control,” Journal of Modern Optics 53, 2559 (2006).

L. F. Santos and L. Viola, “Enhanced convergence and robust performance of randomized dynamical decoupling,” Physical Review Letters 97, 150501 (2006).

A. Mandilara, V. A. Akulin, A. V. Smilga, and L. Viola, “Quantum entanglement via nilpotent variables,” Physical Review A 74, 022331 (2006).

R. Somma, H. Barnum, E. Knill, G. Ortiz, and L. Viola, “Generalized entanglement and quantum phase transitions,” International Journal of Modern Physics B 20, 2760 (2006).

S. Montangero and L. Viola, “Multipartite entanglement generation and fidelity decay in disordered qubit systems,” Physical Review A 73, Rapid Communication, 040302 (2006).


H. Barnum, G. Ortiz, R. Somma, and L. Viola, “A generalization of entanglement to convex operational theories: Entanglement relative to a subspace of observables,” International Journal of Theoretical Physics 44, 2127 (2005).

L. F. Santos and L. Viola, “Dynamical control of qubit coherence: Random versus deterministic schemes,” Physical Review A 72, 062303 (2005).

N. Boulant, L. Viola, E. M. Fortunato, and D. G. Cory, “Experimental implementation of a concatenated quantum error-correcting code,” Physical Review Letters 94,130501 (2005).

L. Viola and E. Knill, “Random decoupling schemes for quantum dynamical control and error suppression,” Physical Review Letters 94, 060502 (2005).

Earlier publications (2004-1993)

L. Viola, “Advances in decoherence control“, Journal of Modern Optics 51, 2357 (2004).

R. Somma, G. Ortiz, H. Barnum, E. Knill, and L. Viola, “Nature and measure of entanglement in quantum phase transitions,” Physical Review A 70, 042311 (2004).

L. Faoro and L. Viola, “Dynamical suppression of 1/f noise processes in qubit systems,” Physical Review Letters 92, 117905 (2004).

H. Barnum, E. Knill, G. Ortiz, R. Somma, and L. Viola, “A subsystem-independent generalization of entanglement,” Physical Review Letters 92, 107902 (2004).

L. Viola and E. Knill, “Verification procedures for quantum noiseless subsystems,” Physical Review A 68, 032311 (2003).

H. Barnum, E. Knill, G. Ortiz, and L. Viola, “Generalizations of entanglement based on coherent states and convex sets,” Physical Review A 68, 032308 (2003).

E. M. Fortunato, L. Viola, M. A. Pravia, E. Knill, R. Laflamme, T. F. Havel, and D. G. Cory, “Exploring noiseless subsystems via nuclear magnetic resonance,” Physical Review A
67, 062303 (2003).

L. Viola and E. Knill, “Robust dynamical decoupling of quantum systems with bounded controls,” Physical Review Letters 90, 037901 (2003).

L. Viola and R. Onofrio, “Contractive Schrödinger cat states for a free mass,” New Journal of Physics 5, 5.1 (2003).

L. Viola, “Quantum control via encoded dynamical decoupling,” Physical Review A 66, 012307 (2002).

R. Laflamme, D. G. Cory, C. Negrevergne, and L. Viola, “NMR quantum information processing and entanglement,” Invited Perspective, Quantum Information & Computation 2, 166 (2002).

E. M. Fortunato, L. Viola, J. Hodges, G. Teklemariam, and D. G. Cory, “Implementation of universal control on a decoherence-free qubit,” New Journal of Physics 4, 5.1 (2002).

S. Lloyd and L. Viola, “Engineering quantum dynamics,” Physical Review A 65, Rapid Communication, 010101 (2001).

L. Viola, E. M. Fortunato, M. A. Pravia, E. Knill, R. Laflamme, and D. G. Cory, “Experimental realization of noiseless subsystems for quantum information processing,” Science 293, 2059 (2001).

L. Viola, E. Knill, and R. Laflamme, “Constructing qubits in physical systems,” Journal of Physics A 34, 7067 (2001).

T. F. Havel, Y. Sharf, L. Viola, and D. G. Cory, “Hadamard products of product operators and the design of gradient-diffusion experiments for simulating decoherence by NMR
spectroscopy,” Physics Letters A 280, 282 (2001).

D. G. Cory, R. Laflamme, E. Knill, L. Viola, T. F. Havel, N. Boulant, G. Boutis, E. M. Fortunato, S. Lloyd, R. Martinez, C. Negrevergne, Y. Sharf, G. Teklemariam, Y. S. Weinstein, and W. H. Zurek, “NMR based quantum information processing: Achievements and prospects,” Fortschritte der Physik 48, 875 (2000).

L. Viola, E. Knill, and S. Lloyd, “Dynamical generation of noiseless quantum subsystems,” Physical Review Letters 85, 3520 (2000).

L. Viola, E. M. Fortunato, S. Lloyd, C.-H. Tseng, and D. G. Cory, “Stochastic resonance and nonlinear response by NMR spectroscopy,” Physical Review Letters 84, 5466 (2000).

K. Pance, L. Viola, and S. Sridhar, “Tunneling proximity resonances: Interplay between symmetry and dissipation,” Physics Letters A 268, 399 (2000).

W. Lu, L. Viola, K. Pance, M. Rose, and S. Sridhar, “Microwave study of quantum n-disk scattering,” Physical Review E 61, 3652 (2000); ibid. 62, 4478 (E) (2000).

E. Knill, R. Laflamme, and L. Viola, “Theory of quantum error correction for general noise,” Physical Review Letters 84, 2525 (2000).

L. Viola, S. Lloyd, and E. Knill, “Universal control of decoupled quantum systems,” Physical Review Letters 83, 4888 (1999).

L. Viola, E. Knill, and S. Lloyd, “Dynamical decoupling of open quantum systems,” Physical Review Letters 82, 2417 (1999).

L. Viola and S. Lloyd, “Dynamical suppression of decoherence in two-state quantum systems,” Physical Review A 58, 2733 (1998).

L. M. Morato and L. Viola, “A relativistically covariant stochastic model for systems with a fluctuating number of particles,” Physics Letters A 246, 214 (1998).

R. Onofrio and L. Viola, “Dynamics of decoherence in continuous atom-optical quantum nondemolition measurements,” Physical Review A 58, 69 (1998).

R. Onofrio and L. Viola, “Lindblad approach to nonlinear Jaynes-Cummings dynamics of a trapped ion,” Physical Review A 56, 39 (1997).

R. Onofrio and L. Viola, “Gravitation at the mesoscopic scale,” Modern Physics Letters A 12, 1411 (1997).

L. Viola and R. Onofrio, “Measured quantum dynamics of a trapped ion,” Physical Review A 55, Rapid Communication, 3291 (1997).

L. Viola, R. Onofrio, and T. Calarco, “Macroscopic quantum damping in SQUID rings,” Physics Letters A 229, 23 (1997).

L. Viola and R. Onofrio, “Testing the equivalence principle through freely falling quantum objects,” Physical Review D 55, 455 (1997).

R. Onofrio and L. Viola, “Quantum damping of position due to energy measurements,” Physical Review A 53, 3773 (1996).

L. M. Morato and L. Viola, “Markov diffusions in co-moving coordinates and stochastic quantization of the free relativistic spinless particle,” Journal of Mathematical Physics 36, 4691 (1995); ibid. 37, 4769 (E) (1995).

F. Illuminati and L. Viola, “Stochastic variational approach to minimum uncertainty states,” Journal of Physics A 28, 2953 (1995).

F. Iachello, S. Oss, and L. Viola, “Algebraic approach to molecular rotation-vibration spectra: Rotation-vibration interactions,” Journal of Chemical Physics 101, 3531 (1994).

F. Iachello, S. Oss, and L. Viola, “Rotation-vibration interaction and Fermi resonances of HCCF in the vibron model,” Molecular Physics 78, 561 (1993).

F. Iachello, S. Oss, and L. Viola, “Vibrational analysis of monofluoroacetylene (HCCF) in the vibron model,” Molecular Physics 78, 545 (1993).