546 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- The University of TokyoJP98 papers
- Centre National de la Recherche ScientifiqueFR85 papers
- The University of OsakaJP47 papers
- RIKENJP46 papers
- University College CorkIE46 papers
- Kyoto UniversityJP34 papers
- Nagoya UniversityJP34 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR29 papers
- Hiroshima UniversityJP28 papers
- Institute of Space and Astronautical ScienceJP28 papers
- Japan Aerospace Exploration AgencyJP27 papers
- Tohoku UniversityJP27 papers
14 papers · 2 filters
Tunneling, self-trapping and manipulation of higher modes of a BEC in a double well
J. Gillet, M. A. Garcia-March, Th. Busch +1
We consider an atomic Bose-Einstein condensate trapped in a symmetric one-dimensional double well potential in the four-mode approximation and show that the semiclassical dynamics…
Two-component Dirac-like Hamiltonian for generating quantum walk on one-, two- and three-dimensional lattices
C. M. Chandrashekar
From the unitary operator used for implementing two-state discrete-time quantum walk on one-, two- and three- dimensional lattice we obtain a two-component Dirac-like Hamiltonian.…
Two-Qubit Gate Operation on Selected Nearest-Neighbor Neutral Atom Qubits
Elham Hosseini Lapasar, Kenichi Kasamatsu, Sile Nic Chormaic +4
We have previously discussed the design of a neutral atom quantum computer with an on-demand interaction [E. Hosseini Lapasar, et al., J. Phys. Soc. Jpn. 80, 114003 (2011)]. In thi…
Quantum state transfer in the presence of non homogeneous external potentials
Gian Luca Giorgi, Thomas Busch
Heisenberg-type spin models in the limit of a low number of excitations are useful tools to study basic mechanisms in strongly correlated and magnetic systems. Many of these mechan…
Coherent transport by adiabatic passage on atom chips
T. Morgan, L. J. O'Riordan, N. Crowley +2
Adiabatic techniques offer some of the most promising tools to achieve high-fidelity control of the centre-of-mass degree of freedom of single atoms. As their main requirement is t…
Criticality, factorization and long-range correlations in the anisotropic XY-model
Steve Campbell, Jonathan Richens, Nicola Lo Gullo +1
We study the long-range quantum correlations in the anisotropic XY-model. By first examining the thermodynamic limit we show that employing the quantum discord as a figure of merit…
Self-avoiding quantum walks: realisations in subspaces and limit theorems
Takuya Machida, C. M. Chandrashekar, Norio Konno +1
While completely self-avoiding quantum walks have the distinct property of leading to a trivial unidirectional transport of a quantum state, an interesting and non-trivial dynamics…
New Spin Squeezing and Other Entanglement Tests for Two Mode Systems of Identical Bosons
Bryan Dalton. Libby Heaney, John Goold, Barry Garraway +1
For any quantum state representing a physical system of identical particles, the density operator must satisfy the symmetrisation principle (SP) and for massive particles also conf…
Localized quantum walks as secured quantum memory
C. M. Chandrashekar, Th. Busch
We show that a quantum walk process can be used to construct and secure quantum memory. More precisely, we show that a localized quantum walk with temporal disorder can be engineer…
Quantum Entanglement for Systems of Identical Bosons. Spin Squeezing and Other Entanglement Tests in Two Mode Systems
Bryan Dalton, Libby Heaney, John Goold +2
The concept of entangled quantum states is considered in the context of systems of identical particles, based on the requirement that in order to represent physical states both for…
Quantum percolation and transition point of a directed discrete-time quantum walk
C. M. Chandrashekar, Th. Busch
Quantum percolation describes the problem of a quantum particle moving through a disordered system. While certain similarities to classical percolation exist, the quantum case has…
Impurities as a quantum thermometer for a Bose-Einstein condensate
Carlos Sabín, Angela White, Lucia Hackermuller +1
We introduce a primary thermometer which measures the temperature of a Bose-Einstein Condensate in the sub-nK regime. We show, using quantum Fisher information, that the precision…
Effect of inter-particle interaction in a free oscillation atomic interferometer
Thomás Fogarty, Anthony Kiely, Steve Campbell +1
We investigate the dynamics of two interacting bosons repeatedly scattering off a beam-splitter in a free oscillation atom interferometer. Using the inter-particle scattering lengt…
Global quantum correlations in finite-size spin chains
S. Campbell, L. Mazzola, G. De Chiara +4
We perform an extensive study of the properties of global quantum correlations in finite-size one-dimensional quantum spin models at finite temperature. By adopting a recently prop…