Quantum Coherence in a Superfluid Josephson Junction

Journal Article · Fri Feb 04 04:00:00 EST 2011 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.106.055302· OSTI ID:21532284

Narayana, Supradeep; Sato, Yuki ^[1]

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1. Rowland Institute at Harvard, Harvard University, Cambridge, Massachusetts 02142 (United States)

We report a new kind of experiment in which we take an array of nanoscale apertures that form a superfluid {sup 4}He Josephson junction and apply quantum phase gradients directly along the array. We observe collective coherent behaviors from aperture elements, leading to quantum interference. Connections to superconducting and Bose-Einstein condensate Josephson junctions as well as phase coherence among the superfluid aperture array are discussed.

• OSTI ID: 21532284
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 5 Vol. 106; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
APERTURES
BOSE-EINSTEIN CONDENSATION
EVEN-EVEN NUCLEI
HELIUM 4
HELIUM ISOTOPES
INTERFERENCE
ISOTOPES
JOSEPHSON JUNCTIONS
LIGHT NUCLEI
NANOSTRUCTURES
NUCLEI
OPENINGS
STABLE ISOTOPES
SUPERCONDUCTING JUNCTIONS
SUPERFLUIDITY