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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...
Testing Nonclassicality and Non-Gaussianity in Phase Space
Nonclassicality Non-Gaussianity Phase Space
2016/1/22
We theoretically propose and experimentally demonstrate a nonclassicality test of a single-mode field in phase space, which has an analogy with the nonlocality test proposed by Banaszek and Wódkiewicz...
Beyond the Random Phase Approximation for the Electron Correlation Energy: The Importance of Single Excitations
Beyond the Random Phase Approximation Electron Correlation Importance of Single Excitations
2010/11/22
The random phase approximation (RPA) for the electron correlation energy, combined with
the exact-exchange energy, represents the state-of-the-art exchange-correlation functional within density-funct...
Tunable subpicosecond electron bunch train generation using a transverse-to-longitudinal phase space exchange technique
Tunable subpicosecond electron bunch train generation transverse-to-longitudinal phase space
2010/11/16
We report on the experimental generation of a train of subpicosecond electron bunches. The bunch train generation is accomplished using a beamline capable of exchanging the coordinates between the hor...
Landau-Zener-Stückelberg Interference of Microwave Dressed States of a Superconducting Phase Qubit
Landau-Zener-Stückelberg Interference Microwave Dressed States Superconducting Phase Qubit
2010/11/11
Dressed state, the eignstate of a combined system of light and matter, has been proposed as fundamental concept to interpret quantum interaction between photons and atoms or molecules. Recently, this...
Avoid First Order Quantum Phase Transition by Changing Problem Hamiltonians
Quantum Phase Transition Changing Problem Hamiltonians
2010/10/29
The problem Hamiltonian of the adiabatic quantum algorithm for the maximum-weight independent set problem (MIS) that is based on the reduction to the Ising problem has flexible parameters. We show tha...
Decoherence as a signature of an excited state quantum phase transition
Decoherence excited state quantum phase transition
2010/3/10
We analyze the decoherence induced on a single qubit by the interaction with a two-level boson system with critical internal dynamics. We explore how the decoherence process is affected by the presenc...
Calculated Pressure Induced BCC-FCC Phase Transitions in Alkali Metals
Pressure Phase Transformations Alkali Metals Electronic Structure Calculations LMTO Method
2010/4/8
The partial occupation numbers and density of states (DOS), and the total DOS at the Fermi level are calculated as a function of reduced atomic volume for bcc and fcc alkali metals employing the linea...
Phase Evolution of the Electronic Transmission Through a Kondo Correlated Quantum Dot
Quantum dots Scattering phase Kondo effect X-boson
2010/9/25
We study the scattering phase shift of the Kondo assisted transmission through a quantum dot (QD), considering a model that includes an additional non resonant channel transmission. To compute the pha...
Comment on "Quantum Phase Shift Caused by Spatial Confinement", by B.E. Allman et al
interferometry phase shifts force-free effects
2010/10/13
The analysis of phase shifts in executed and proposed interferometry experiments on photons
and neutrons neglected forces exerted at the boundaries of spatial constrictions. When
those forces are in...