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Source attack of decoy-state quantum key distribution using phase information
Source attack decoy-state quantum key distribution phase information
2016/1/23
Quantum key distribution (QKD) utilizes the laws of quantum mechanics to achieve information-theoretically secure key generation. This field is now approaching the stage of commercialization, but many...
Design and Testing of Superconducting Microwave Passive Components for Quantum Information Processing
Design Testing Superconducting Microwave Passive Components Quantum Information Processing
2010/11/5
We report on the design, fabrication and testing of two superconducting passive microwave components, a quadrature hybrid and a 20 dB directional coupler. These components are designed to be integrate...
Quasi-probability representations of quantum theory with applications to quantum information science
Quasi-probability representations quantum theory applications quantum information science
2010/11/5
This article comprises a review of both the quasi-probability representations of infinite-dimensional quantum theory (including the Wigner function) and the more recently defined quasi-probability rep...
Manipulating quantum information on the controllable systems or subspaces
Manipulating quantum information controllable systems subspaces
2010/10/29
In this paper, we explore how to constructively manipulate quantum information on the controllable systems or subspaces. It is revealed that one can make full use of distinguished properties of Pauli ...
Explaining the Unobserved: Why Quantum Mechanics Is Not only About Information
Quantum information Collapse theories Crucial experiments Constructive theories
2011/9/8
A remarkable theorem by Clifton, Bub and Halverson (2003) (CBH) characterizes quantum theory in terms of information--theoretic principles. According to Bub (2004, 2005) the philosophical significance...
Superconducting nanowire single photon detectors for quantum information and communications
Superconducting nanowire single photon detectors quantum key distribution Gifford-McMahon
2010/3/10
Superconducting nanowire single photon detectors (SNSPD or SSPD) are highly promising devices in the growing field of quantum information and communications technology. We have developed a practical S...
Universal quantum limits on single channel information, entropy and heat flow
Universal quantum limits single channel information , entropy heat flow
2010/10/13
We show that the recently discovered universal upper bound on the thermal conductance of a single channel comprising particles obeying arbitrary fractional statistics is in fact a consequence of a mor...
New center to explore quantum information theory
quantum information theory quantum computers
2007/3/12
March 9, 2007，What are the ultimate powers of quantum computers, quantum communications and quantum precision measurement systems?MIT's new $3.5 million W. M. Keck Foundation Center for Extreme Quantu...