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16 papers · 2 filters
Quantum light depolarization: the phase-space perspective
A. B. Klimov, J. L. Romero, L. L. Sanchez-Soto +2
Quantum light depolarization is handled through a master equation obtained by coupling dispersively the field to a randomly distributed atomic reservoir. This master equation is so…
Experimental test of uncertainty relations for quantum mechanics on a circle
J. Rehacek, Z. Bouchal, R. Celechovsky +2
We rederive uncertainty relations for the angular position and momentum of a particle on a circle by employing the exponential of the angle instead of the angle itself, which leads…
Necessary and sufficient detection efficiency for the Mermin inequalities
Adan Cabello, David Rodriguez, Ignacio Villanueva
We prove that the threshold detection efficiency for a loophole-free Bell experiment using an -qubit Greenberger-Horne-Zeilinger state and the correlations appearing in the -…
Statistical Mechanical Models and Topological Color Codes
H. Bombin, M. A. Martin-Delgado
We find that the overlapping of a topological quantum color code state, representing a quantum memory, with a factorized state of qubits can be written as the partition function of…
Sequential Implementation of Global Quantum Operations
L. Lamata, J. Leon, D. Perez-Garcia +2
We study the possibility for a global unitary applied on an arbitrary number of qubits to be decomposed in a sequential unitary procedure, where an ancillary system is allowed to i…
Characterization of quantum angular-momentum fluctuations via principal components
Ángel Rivas, Alfredo Luis
We elaborate an approach to quantum fluctuations of angular momentum based on the diagonalization of the covariance matrix in two versions: real symmetric and complex Hermitian. At…