Ognyan Oreshkov

Ognyan Oreshkov received his M.S. in Theoretical and Mathematical Physics from the University of Sofia, Bulgaria, in 2002. He then moved to Los Angeles to pursue doctoral studies in Physics at the University of Southern California, where he obtained his Ph.D. in 2008 under the supervision of Prof. Todd A. Brun. Following his graduation, he worked as a postdoctoral researcher at the Quantum Information Group at the Universitat Autònoma de Barcelona (2008-2009) and at the Quantum Foundations and Quantum Information Theory Group at the University of Vienna (2010). From 2011 to 2016, Ognyan was a postdoctoral fellow at QuIC, where he was funded by a Marie Curie Intra-European Fellowship for Career Development and an F.R.S.-FNRS Chargé de Recherches Fellowship. After nine months as a Research Associate at the University of Oxford in 2017, Ognyan returned to QuIC as a permanent F.R.S.-FNRS researcher.

• Time and causal structure in quantum theory
• Foundations of quantum mechanics
• Quantum information theory
• Quantum error correction
• Quantum control theory
• Geometric and topological phases
• Adiabatic approaches to quantum computation
• Dynamics of open quantum systems

O. Oreshkov and C. Giarmatzi,
Causal and causally separable processes,
New J. Phys. 18, 093020 (2016), http://arxiv.org/abs/1506.05449.

O. Oreshkov and N. J. Cerf,
Operational quantum theory without predefined time,
New J. Phys. 18, 073037 (2016), http://arxiv.org/abs/1406.3829.

O. Oreshkov and N. J. Cerf,
Operational formulation of time reversal in quantum theory,
Nature Phys. 11, 853-858 (2015), http://arxiv.org/abs/1507.07745.

C. N. Gagatsos, O. Oreshkov, and N. J. Cerf,
Majorization relations and entanglement generation in a beam splitter,
Phys. Rev. A 87, 042307 (2013), http://arxiv.org/abs/1301.5229.

O. Oreshkov, F. Costa, and C. Brukner,
Quantum correlations with no causal order,
Nat. Commun. 3, 1092 (2012), http://arxiv.org/abs/1105.4464.

C. Bény and O. Oreshkov,
Approximate simulation of quantum channels,
Phys. Rev. A 84, 022333 (2011), http://arxiv.org/abs/1103.0649.

O. Oreshkov, J. Calsamiglia, R. Munoz-Tapia, and E. Bagan,
Optimal signal states for quantum detectors,
New J. Phys. 13, 073032 (2011), http://arxiv.org/abs/1103.2365.

O. Oreshkov and J. Calsamiglia,
Adiabatic Markovian dynamics,
Phys. Rev. Lett. 105, 050503 (2010), http://arxiv.org/abs/1002.2219.

C. Bény and O. Oreshkov,
General conditions for approximate quantum error correction and near-optimal recovery channels,
Phys. Rev. Lett. 104, 120501 (2010), http://arxiv.org/abs/0907.5391.

O. Оreshkov and J. Calsamiglia,
Comment on “Nongeometric Conditional Phase Shift via Adiabatic Evolution of Dark Eigenstates: A New Approach to Quantum Computation”,
Phys. Rev. Lett. 103, 188901 (2009), http://arxiv.org/abs/0910.5694.

O. Oreshkov,
Holonomic quantum computation in subsystems,
Phys. Rev. Lett. 103, 090502 (2009), http://arxiv.org/abs/0905.1249.

O. Oreshkov, T. A. Brun, and D. A. Lidar,
Scheme for fault-tolerant holonomic computation on stabilizer codes,
Phys. Rev. A 80, 022325 (2009), http://arxiv.org/abs/0904.2143.

O. Оreshkov and J. Calsamiglia,
Distinguishability measures between ensembles of quantum states,
Phys. Rev. A 79, 032336 (2009), http://arxiv.org/abs/0812.3832.

O. Оreshkov, T. A. Brun, and D. A. Lidar,
Fault-tolerant holonomic quantum computation,
Phys. Rev. Lett. 102, 070502 (2009), http://arxiv.org/abs/0806.0875.

O. Oreshkov, D. A. Lidar, and T. A. Brun,
Operator quantum error correction for continuous dynamics,
Phys. Rev. A 78, 022333 (2008), http://arxiv.org/abs/0806.3145.

B. Shaw, M. M. Wilde, O. Oreshkov, I. Kremsky, and D. A. Lidar,
Encoding one logical qubit into six physical qubits,
Phys. Rev. A 78, 012337 (2008), http://arxiv.org/abs/0803.1495.

O. Oreshkov,
Robustness of operator quantum error correction with respect to initialization errors,
Phys. Rev. A 77, 032333 (2008), http://arxiv.org/abs/0709.3533.

H. Krovi, O. Oreshkov, M. Ryazanov, and D. A. Lidar,
Non-Markovian dynamics of a qubit coupled to an Ising spin bath,
Phys. Rev. A 76, 052117 (2007), http://arxiv.org/abs/0707.2096.

O. Oreshkov and T. A. Brun,
Continuous quantum error correction for non-Markovian decoherence,
Phys. Rev. A 76, 022318 (2007), http://arxiv.org/abs/0705.2342.

O. Oreshkov and T. A. Brun,
Infinitesimal local operations and differential conditions for entanglement monotones,
Phys. Rev. A 73, 042314 (2006), http://arxiv.org/abs/quant-ph/0506181.

O. Oreshkov and T. A. Brun,
Weak measurements are universal,
Phys. Rev. Lett. 95, 110409 (2005), http://arxiv.org/abs/quant-ph/0503017.

O. Оreshkov,
Continuous-time quantum error correction,
In “Quantum error correction”, edited by D. A. Lidar and T. A. Brun, (Cambridge University Press, 2013), http://arxiv.org/abs/1311.2485.

O. Оreshkov, T. A. Brun, and D. A. Lidar,
Fault tolerance for holonomic quantum computation,
In “Quantum error correction”, edited by D. A. Lidar and T. A. Brun, (Cambridge University Press, 2013), http://arxiv.org/abs/1312.0165.

O. Oreshkov,
Topics in quantum information and the theory of open quantum systems,
Ph.D. thesis, University of Southern California (2008), http://arxiv.org/abs/0812.4682.