336 citations · 1.8k across the 72 of their papers we have counts for
4 papers · 1 filter
Parametric randomization, complex symplectic factorizations, and quadratic-exponential functionals for Gaussian quantum states
Igor G. Vladimirov, Ian R. Petersen, Matthew R. James
This paper combines probabilistic and algebraic techniques for computing quantum expectations of operator exponentials (and their products) of quadratic forms of quantum variables…
A Systems Theory Approach to the Synthesis of Minimum Noise Phase-Insensitive Quantum Amplifiers
Ian R. Petersen, Matthew R. James, Valery Ugrinovskii +1
We present a systems theory approach to the proof of a result bounding the required level of added quantum noise in a phase-insensitive quantum amplifier. We also present a synthes…
Risk-sensitive performance criteria and robustness of quantum systems with a relative entropy description of state uncertainty
Igor G. Vladimirov, Ian R. Petersen, Matthew R. James
This paper considers links between the original risk-sensitive performance criterion for quantum control systems and its recent quadratic-exponential counterpart. We discuss a conn…
Violation of Bells inequality using continuous variable measurements
Oliver Thearle, Jiri Janousek, Seiji Armstrong +8
A Bell inequality is a fundamental test to rule out local hidden variable model descriptions of correlations between two physically separated systems. There have been a number of e…