Masahito Ueda

Publications508
h-index55
Citations11,948
Highly Influential Citations331
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Spinor Bose–Einstein condensates
Abstract An overview of the physics of spinor and dipolar Bose–Einstein condensates (BECs) is given. Mean-field ground states, Bogoliubov spectra, and many-body ground and excited states of spinor…
Topological Phases of Non-Hermitian Systems
Recent experimental advances in controlling dissipation have brought about unprecedented flexibility in engineering non-Hermitian Hamiltonians in open classical and quantum systems. A particular…
Spinor Bose gases: Symmetries, magnetism, and quantum dynamics
Spinor Bose gases form a family of quantum fluids manifesting both magnetic order and superfluidity. This article reviews experimental and theoretical progress in understanding the static and dynamic…
Symmetry and Topology in Non-Hermitian Physics
We develop a complete theory of symmetry and topology in non-Hermitian physics. We demonstrate that non-Hermiticity ramifies the celebrated Altland-Zirnbauer symmetry classification for insulators…
Fundamentals and new frontiers of bose-einstein condensation
Experimental demonstration of information-to-energy conversion and validation of the generalized Jarzynski equality
Feedback mechanisms such as the ‘demon’ in Maxwell’s well-known thought experiment can, in principle, enable the transformation of information into energy, without violating the second law of…
Minimal energy cost for thermodynamic information processing: measurement and information erasure.
TLDR
The fundamental lower bounds on the thermodynamic energy cost of measurement and information erasure are determined and constitute the second law of "information thermodynamics," in which information content and thermodynamic variables are treated on an equal footing.
Vortex lattice formation in a rotating Bose-Einstein condensate
We study the dynamics of vortex lattice formation of a rotating trapped Bose-Einstein condensate by numerically solving the two-dimensional Gross-Pitaevskii equation, and find that the condensate…
Einstein-Podolsky-Rosen correlation in a gravitational field
For quantum communication in a gravitational field, the properties of the Einstein-Podolsky-Rosen (EPR) correlation are studied within the framework of general relativity. Acceleration and gravity…
Generalized Jarzynski equality under nonequilibrium feedback control.
TLDR
The Jarzynski equality is generalized to situations in which nonequilibrium systems are subject to a feedback control, and an "information ratchet" is introduced, which can transport a Brownian particle in one direction and extract positive work from the particle.
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