Large array of Schrödinger cat states facilitated by an optical waveguide
Sign Up to like & getrecommendations! Published in 2020 at "Nature Communications"
DOI: 10.1038/s41467-020-19030-2
Abstract: Quantum engineering using photonic structures offer new capabilities for atom-photon interactions for quantum optics and atomic physics, which could eventually lead to integrated quantum devices. Despite the rapid progress in the variety of structures, coherent… read more here.
Keywords: array schr; large array; cat states; dinger cat ... See more keywords
Quantum metrology with generalized cat states
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review A"
DOI: 10.1103/physreva.100.032318
Abstract: We show a general relationship between a superposition of macroscopically distinct states and sensitivity in quantum metrology. Generalized cat states are defined by using an index which extracts the coherence between macroscopically distinct states, and… read more here.
Keywords: cat states; sensitivity; quantum metrology; generalized cat ... See more keywords
Generating and detecting entangled cat states in dissipatively coupled degenerate optical parametric oscillators
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review A"
DOI: 10.1103/physreva.104.013715
Abstract: Zheng-Yang Zhou,1,2 Clemens Gneiting,2 J. Q. You,3,1,* and Franco Nori 2,4,5,† 1Beijing Computational Science Research Center, Beijing 100094, China 2Theoretical Quantum Physics Laboratory, RIKEN Cluster for Pioneering Research, Wako-shi, Saitama 351-0198, Japan 3Interdisciplinary Center of… read more here.
Keywords: physics; generating detecting; detecting entangled; entangled cat ... See more keywords
Revival patterns for Dirac cat states in a constant magnetic field
Sign Up to like & getrecommendations! Published in 2023 at "Physical Review A"
DOI: 10.1103/physreva.107.042220
Abstract: Considering the parity symmetry related to the Dirac equation, the interplay between energy localization and the temporal evolution of parity-defined quantum superpositions is investigated for fermions in a magnetic field. The unitary evolution of Dirac… read more here.
Keywords: dirac cat; magnetic field; parity; cat states ... See more keywords
Fast amplification and rephasing of entangled cat states in a qubit-oscillator system
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review A"
DOI: 10.1103/physreva.99.013827
Abstract: We study a qubit-oscillator system, with a time-dependent coupling coefficient, and present a fast scheme for generating entangled Schr\"odinger-cat states with large mean photon numbers and also a scheme that protects the cat states against… read more here.
Keywords: cat states; qubit oscillator; system; oscillator system ... See more keywords
Stabilizing Arrays of Photonic Cat States via Spontaneous Symmetry Breaking.
Sign Up to like & getrecommendations! Published in 2019 at "Physical review letters"
DOI: 10.1103/physrevlett.122.120402
Abstract: The controlled generation and the protection of entanglement is key to quantum simulation and quantum computation. At the single-mode level, protocols based on photonic cat states hold strong promise as they present unprecedentedly long-lived coherence… read more here.
Keywords: via spontaneous; spontaneous symmetry; symmetry breaking; photonic cat ... See more keywords
Analog Quantum Control of Magnonic Cat States on a Chip by a Superconducting Qubit.
Sign Up to like & getrecommendations! Published in 2022 at "Physical review letters"
DOI: 10.1103/physrevlett.129.037205
Abstract: We propose to directly and quantum-coherently couple a superconducting transmon qubit to magnons-the quanta of the collective spin excitations, in a nearby magnetic particle. The magnet's stray field couples to the qubit via a superconducting… read more here.
Keywords: control magnonic; qubit; cat states; analog quantum ... See more keywords
Protecting the Quantum Interference of Cat States by Phase-Space Compression
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review X"
DOI: 10.1103/physrevx.13.021004
Abstract: Cat states, with their unique phase-space interference properties, are ideal candidates for understanding fundamental principles of quantum mechanics and performing key quantum information processing tasks. However, they are highly susceptible to photon loss, which inevitably… read more here.
Keywords: phase space; space; interference; cat states ... See more keywords
Generation and manipulation of Schrödinger cat states in Rydberg atom arrays
Sign Up to like & getrecommendations! Published in 2019 at "Science"
DOI: 10.1126/science.aax9743
Abstract: Entanglement goes large The success of quantum computing relies on the ability to entangle large-scale systems. Various platforms are being pursued, with architectures based on superconducting qubits and trapped atoms being the most advanced. By… read more here.
Keywords: quantum; rydberg atom; cat states; dinger cat ... See more keywords
Schrödinger cat states of a 16-microgram mechanical oscillator
Sign Up to like & getrecommendations! Published in 2022 at "Science"
DOI: 10.1126/science.adf7553
Abstract: According to quantum mechanics, a physical system can be in any linear superposition of its possible states. Although the validity of this principle is routinely validated for microscopic systems, it is still unclear why we… read more here.
Keywords: dinger cat; microgram mechanical; states microgram; cat states ... See more keywords
Arik–Coon q-oscillator cat states on the noncommutative complex plane ℂq−1 and their nonclassical properties
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Geometric Methods in Modern Physics"
DOI: 10.1142/s0219887817500608
Abstract: The normalized even and odd q-cat states corresponding to Arik–Coon q-oscillator on the noncommutative complex plane ℂq−1 are constructed as the eigenstates of the lowering operator of a q-deformed su(1, 1) algebra with the left… read more here.
Keywords: even odd; coon oscillator; cat states; arik coon ... See more keywords