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Generalized Entanglement Entropies of Quantum Designs
(American Physical Society, 2018-03)
The entanglement properties of random quantum states or dynamics are important to the study of a broad spectrum of disciplines of physics, ranging from quantum information to high energy and many-body physics. This Letter ...
Optimal rates for electron transfer in Marcus theory
(American Physical Society, 2013-10)
We examine electron transfer between two quantum states in the presence of a dissipative environment represented as a set of independent harmonic oscillators. For this simple model, the Marcus transfer rates can be derived ...
Resource Destroying Maps
(American Physical Society, 2017-02)
Resource theory is a widely applicable framework for analyzing the physical resources required for given tasks, such as computation, communication, and energy extraction. In this Letter, we propose a general scheme for ...
Correlation matrices of two-mode bosonic systems
(American Physical Society, 2009-05)
We present a detailed analysis of all the algebraic conditions an arbitrary 4×4 symmetric matrix must satisfy in order to represent the correlation matrix of a two-mode bosonic system. Then, we completely clarify when this ...
Multimode quantum entropy power inequality
(American Physical Society, 2015-03)
The quantum version of a fundamental entropic data-processing inequality is presented. It establishes a lower bound for the entropy that can be generated in the output channels of a scattering process, which involves a ...
Numerical evidence for robustness of environment-assisted quantum transport
(American Physical Society, 2014-04)
Recent theoretical studies show that decoherence process can enhance transport efficiency in quantum systems. This effect is known as environment-assisted quantum transport (ENAQT). The role of ENAQT in optimal quantum ...
Gaussian quantum information
(American Physical Society, 2012-05)
The science of quantum information has arisen over the last two decades centered on the manipulation of individual quanta of information, known as quantum bits or qubits. Quantum computers, quantum cryptography, and quantum ...
Quantum algorithms for topological and geometric analysis of data
(Nature Publishing Group, 2016-01)
Extracting useful information from large data sets can be a daunting task. Topological methods for analysing data sets provide a powerful technique for extracting such information. Persistent homology is a sophisticated ...
Quantum Enigma Machines and the Locking Capacity of a Quantum Channel
(American Physical Society, 2014-01)
The locking effect is a phenomenon that is unique to quantum information theory and represents one of the strongest separations between the classical and quantum theories of information. The Fawzi-Hayden-Sen locking protocol ...
Quantum Brachistochrone Curves as Geodesics: Obtaining Accurate Minimum-Time Protocols for the Control of Quantum Systems
(American Physical Society, 2015-04)
Most methods of optimal control cannot obtain accurate time-optimal protocols. The quantum brachistochrone equation is an exception, and has the potential to provide accurate time-optimal protocols for a wide range of ...