Results 11 to 20 of about 17,162,216 (181)

Fast preparation of Dicke state by shortcuts to adiabatic passages

open access: yesResults in Physics
Dicke state is one of the most useful multipartite quantum states. In this paper, by utilizing the method of designing the evolution operators to construct shortcuts to adiabatic passages (STAP), we have implemented the fast preparation of Dicke states ...
C.Q. Wang   +7 more
doaj   +2 more sources

Qudit Dicke state preparation [PDF]

open access: yes, 2023
Qudit Dicke states are higher-dimensional analogues of an important class ofhighly-entangled quantum states known as (qubit) Dicke states. A circuit forpreparing arbitrary qudit Dicke states deterministically is formulated.
Nepomechie, Rafael I
core   +2 more sources

Dynamics of nonequilibrium Dicke models [PDF]

open access: yes, 2012
Motivated by experiments observing self-organization of cold atoms in optical cavities we investigate the collective dynamics of the associated non-equilibrium Dicke model.
Keeling, J   +7 more
core   +1 more source

Asymmetry activation and its relation to coherence under permutation operation [PDF]

open access: yesQuantum
A Dicke state and its decohered state are invariant for permutation. However, when another qubits state to each of them is attached, the whole state is not invariant for permutation, and has a certain asymmetry for permutation.
Masahito Hayashi
doaj   +1 more source

Dicke phase transition with multiple superradiant states in quantum chaotic resonators [PDF]

open access: yes, 2014
A. F. acknowledges funding from KAUST (Grant No. CRG-1-2012-FRA-005). A. D. F. acknowledges support from the EPSRC (Fellowships No. EP/I004602/1 and No. EP/J004200/1).We experimentally investigate the Dicke phase transition in chaotic optical resonators ...
Liu, Changxu   +6 more
core   +1 more source

Dicke-Cooperativity-Assisted Ultrastrong Coupling Enhancement in Terahertz Metasurfaces

open access: yes, 2022
A system of N two-level atoms cooperatively interacting with a photonic field can be described as a single giant atom coupled to the field with interaction strength ∝N. This enhancement, known as Dicke cooperativity in quantum optics, has recently become
Amit Agrawal (314251)   +10 more
core   +1 more source

Short-Depth Circuits for Dicke State Preparation [PDF]

open access: yes, 2022
We present short-depth circuits to deterministically prepare any Dicke state |Dn,k>, which is the equal-amplitude superposition of all n-qubit computational basis states with Hamming Weight k.
Eidenbenz, Stephan, Bärtschi, Andreas
core   +1 more source

Dicke state preparation with applications in metrology

open access: yes, 2021
In this thesis, we focus on three distinct strategies to prepare Dicke states for quantum enhanced metrology. First, we consider an ensemble of spins with dipole-dipole interactions where we apply pulses to selectively climb up the Dicke ladder.
Nabomita Roy Mukty (12308915)
core   +1 more source

Universal gates for transforming multipartite entangled Dicke states

open access: yesNew Journal of Physics, 2014
We determine the minimal number of qubits that it is necessary to have access to in order to transform Dicke states into other Dicke states. In general, the number of qubits in Dicke states cannot be increased via transformation gates by accessing only a
Toshiki Kobayashi   +6 more
doaj   +1 more source

Critical behaviour in the optimal generation of multipartite entanglement

open access: yesScientific Reports, 2017
Two systems whose correlations cannot be classically accounted for display the simplest instance of quantum entanglement. Although this two-party association has caused a revolution in the foundations and uses of quantum mechanics, genuine entanglement ...
M. G. M. Moreno, Fernando Parisio
doaj   +1 more source

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