Observation of Interference Between Two Bose Condensates

Andrews, M. R.; Townsend, C. G.; Miesner, H.-J.; Durfee, Dallin; Kurn, D. M.; Ketterle, Wolfgang

doi:10.1126/science.275.5300.637

Cited by 1,544 publications

(1,538 citation statements)

References 26 publications

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“…While the quantum state is always perturbed in a measurement, in a destructive measurement the BEC itself is destroyed in the process, such that it cannot be repeated more than once for a particular experimental instance. These include techniques such as absorption imaging [1,34] or fluorescent imaging [35] which are examples of strong projective measurements. In these cases, what is finally performed is a count of the number of atoms in each level, which is a measurement in the S z basis.…”

Section: Experimental Implementationmentioning

confidence: 99%

Macroscopic quantum information processing using spin coherent states

Byrnes

Rosseau

Khosla

et al. 2015

Optics Communications

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Previously a new scheme of quantum information processing based on spin coherent states of two component Bose-Einstein condensates was proposed (Byrnes et al. Phys. Rev. A 85, 40306(R)). In this paper we give a more detailed exposition of the scheme, expanding on several aspects that were not discussed in full previously. The basic concept of the scheme is that spin coherent states are used instead of qubits to encode qubit information, and manipulated using collective spin operators. The scheme goes beyond the continuous variable regime such that the full space of the Bloch sphere is used. We construct a general framework for quantum algorithms to be executed using multiple spin coherent states, which are individually controlled. We illustrate the scheme by applications to quantum information protocols, and discuss possible experimental implementations. Decoherence effects are analyzed under both general conditions and for the experimental implementation proposed.

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Section: Experimental Implementationmentioning

confidence: 99%

Macroscopic quantum information processing using spin coherent states

Byrnes

Rosseau

Khosla

et al. 2015

Optics Communications

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show abstract

“…The coherence of a condensate was first demonstrated by Andrews et al by the observation of matter-wave interference when two independent Bose-Einstein condensates were overlapped [41]. The regular high-contrast fringes indicated, at least qualitatively, that the condensates possessed longrange first-order coherence.…”

Section: A Measurement Of the Coherence Length Of A Bose-einstein Conmentioning

confidence: 98%

Spinor Condensates and Light Scattering from Bose-Einstein Condensates

Stamper-Kurn¹,

Ketterle²

Les Houches - Ecole D’Ete De Physique Theorique

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“…The development of atomic BECs has enabled a new form of atom interferometry in which a trapped BEC is coherently split and recombined after a period of differential evolution. Following a pioneering early experiment [97], many BEC interferometers have been constructed based around the principle of a raised, and subsequently lowered, double-well potential [98][99][100][101][102]. This scheme allows long interaction times [103] and the small spatial scale potentially permits accurate measurements of, e.g., the Casimir-Polder potential of a surface [102].…”

Section: Bright Solitary Wave Interferometrymentioning

confidence: 99%

Spontaneous Symmetry Breaking, Self-Trapping, and Josephson Oscillations

Malomed¹

2013

Progress in Optical Science and Photonics

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In recent years, bright soliton-like structures composed of gaseous Bose-Einstein condensates have been generated at ultracold temperature. The experimental capacity to precisely engineer the nonlinearity and potential landscape experienced by these solitary waves offers an attractive platform for fundamental study of solitonic structures. The presence of three spatial dimensions and trapping implies that these are strictly distinct objects to the true soliton solutions. Working within the zero-temperature mean-field description, we explore the solutions and stability of bright solitary waves, as well as their interactions. Emphasis is placed on elucidating their similarities and differences to the true bright soliton. The rich behaviour introduced in the bright solitary waves includes the collapse instability and symmetry-breaking collisions. We review the experimental formation and observation of bright solitary matter waves to date, and compare to theoretical predictions. Finally we discuss the current state-of-the-art of this area, including beyond-mean-field descriptions, exotic bright solitary waves, and proposals to exploit bright solitary waves in interferometry and as surface probes.

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Observation of Interference Between Two Bose Condensates

Cited by 1,544 publications

References 26 publications

Macroscopic quantum information processing using spin coherent states

Macroscopic quantum information processing using spin coherent states

Spinor Condensates and Light Scattering from Bose-Einstein Condensates

Spontaneous Symmetry Breaking, Self-Trapping, and Josephson Oscillations

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