Advances in quantum cryptography
Quantum cryptography is arguably the fastest growing area in quantum information science.
Novel theoretical protocols are designed on a regular basis, security proofs are constantly …
Novel theoretical protocols are designed on a regular basis, security proofs are constantly …
Quantum-enhanced measurements without entanglement
Quantum-enhanced measurements exploit quantum mechanical effects for increasing the
sensitivity of measurements of certain physical parameters and have great potential for both …
sensitivity of measurements of certain physical parameters and have great potential for both …
Quantum fidelity for arbitrary Gaussian states
We derive a computable analytical formula for the quantum fidelity between two arbitrary
multimode Gaussian states which is simply expressed in terms of their first-and second …
multimode Gaussian states which is simply expressed in terms of their first-and second …
Quantum information with Gaussian states
Quantum optical Gaussian states are a type of important robust quantum states which are
manipulatable by the existing technologies. So far, most of the important quantum …
manipulatable by the existing technologies. So far, most of the important quantum …
Markovian master equations: a critical study
We derive Markovian master equations for single and interacting harmonic systems in
different scenarios, including strong internal coupling. By comparing the dynamics resulting …
different scenarios, including strong internal coupling. By comparing the dynamics resulting …
Quantum systems under frequency modulation
We review the physical phenomena that arise when quantum mechanical energy levels are
modulated in time. The dynamics resulting from changes in the transition frequency is a …
modulated in time. The dynamics resulting from changes in the transition frequency is a …
Entanglement properties of non-Gaussian resources generated via photon subtraction and addition and continuous-variable quantum-teleportation improvement
Y Yang, FL Li - Physical Review A—Atomic, Molecular, and Optical …, 2009 - APS
The entanglement properties of non-Gaussian states are investigated, which are obtained
by performing the photon addition, photon subtraction, photon-addition-then-subtraction …
by performing the photon addition, photon subtraction, photon-addition-then-subtraction …
Uhlmann fidelity between two-mode Gaussian states
We analyze the Uhlmann fidelity of a pair of n-mode Gaussian states of the quantum
radiation field. This quantity is shown to be the product of an exponential function depending …
radiation field. This quantity is shown to be the product of an exponential function depending …
Bounding the energy-constrained quantum and private capacities of phase-insensitive bosonic Gaussian channels
We establish several upper bounds on the energy-constrained quantum and private
capacities of all single-mode phase-insensitive bosonic Gaussian channels. The first upper …
capacities of all single-mode phase-insensitive bosonic Gaussian channels. The first upper …
Bures distance as a measure of entanglement for two-mode squeezed thermal states
We propose a reliable entanglement measure for a two-mode squeezed thermal state of the
quantum electromagnetic field in terms of its Bures distance to the set of all separable states …
quantum electromagnetic field in terms of its Bures distance to the set of all separable states …