Zobrazeno 1 - 10
of 63
pro vyhledávání: '"I B Spielman"'
Publikováno v:
Machine Learning: Science and Technology, Vol 3, Iss 4, p 047001 (2022)
We establish a dataset of over $1.6\times10^4$ experimental images of Bose–Einstein condensates containing solitonic excitations to enable machine learning (ML) for many-body physics research. About $33$ % of this dataset has manually assigned and
Externí odkaz:
https://doaj.org/article/116bb028ab514bc2b94150c94ba7ba56
Publikováno v:
New Journal of Physics, Vol 21, Iss 5, p 053021 (2019)
Physical systems with non-trivial topological order find direct applications in metrology (Klitzing et al 1980 Phys . Rev. Lett . 45 494–7) and promise future applications in quantum computing (Freedman 2001 Found. Comput. Math. 1 183–204; Kitaev
Externí odkaz:
https://doaj.org/article/dc47c465495b4bffbc35c3e715097342
Publikováno v:
New Journal of Physics, Vol 21, Iss 8, p 083035 (2019)
The creation of particle–antiparticle pairs from vacuum by a large electric field is at the core of quantum electrodynamics. Despite the wide acceptance that this phenomenon occurs naturally when electric field strengths exceed E _c ≈ 10 ^18 V m
Externí odkaz:
https://doaj.org/article/8b0bf4f107704f05909aeda06c64b5e8
Publikováno v:
New Journal of Physics, Vol 20, Iss 11, p 113032 (2018)
We trap individual 1D Bose gases and obtain the associated equation of state by combining calibrated confining potentials with in situ density profiles. Our observations agree well with the exact Yang–Yang 1D thermodynamic solutions under the local
Externí odkaz:
https://doaj.org/article/6d7d78ccdf6e4ba8b6d7a133e89afca0
Publikováno v:
New Journal of Physics, Vol 20, Iss 5, p 055001 (2018)
We describe a novel technique for creating an artificial magnetic field for ultracold atoms using a periodically pulsed pair of counter propagating Raman lasers that drive transitions between a pair of internal atomic spin states: a multi-frequency c
Externí odkaz:
https://doaj.org/article/0c1e31cd742849fda4a55fe3884b46ae
Publikováno v:
New Journal of Physics, Vol 19, Iss 3, p 033025 (2017)
We describe a Fourier transform spectroscopy technique for directly measuring band structures, and apply it to a spin-1 spin–orbit coupled Bose–Einstein condensate. In our technique, we suddenly change the Hamiltonian of the system by adding a sp
Externí odkaz:
https://doaj.org/article/f8f30c6a8a3643539e2321792f34d4df
Autor:
D L Campbell, I B Spielman
Publikováno v:
New Journal of Physics, Vol 18, Iss 3, p 033035 (2016)
We theoretically explore a Rashba spin–orbit coupling scheme which operates entirely in the absolute ground state manifold of an alkali atom, thereby minimizing all inelastic processes. An energy gap between ground eigenstates of the proposed coupl
Externí odkaz:
https://doaj.org/article/47d83c0de6a84f81814bd8cb3e37d0d4
Publikováno v:
New Journal of Physics, Vol 18, Iss 11, p 113009 (2016)
We observed a new mechanism for vortex nucleation in Bose–Einstein condensates (BECs) subject to synthetic magnetic fields. We made use of a strong synthetic magnetic field initially localized between a pair of merging BECs to rapidly create vortic
Externí odkaz:
https://doaj.org/article/ac63761927714e68a30cebb75a741af5
Publikováno v:
New Journal of Physics, Vol 17, Iss 6, p 065016 (2015)
The order parameter of a quantum-coherent many-body system can include a phase degree of freedom, which, in the presence of an electromagnetic field, depends on the choice of gauge. Because of the relationship between the phase gradient and the veloc
Externí odkaz:
https://doaj.org/article/f6741944c9fa422b9f20c5de025ebafd
Publikováno v:
New Journal of Physics, Vol 17, Iss 3, p 033045 (2015)
We theoretically explore atomic Bose–Einstein condensates (BECs) subject to position-dependent spin–orbit coupling (SOC). This SOC can be produced by cyclically laser coupling four internal atomic ground (or metastable) states in an environment w
Externí odkaz:
https://doaj.org/article/0c6b338ae8244dcfaa25e31d8fbed7b5