Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Summy, Gil S"'
Autor:
Bolik, Nikolai, Groiseau, Caspar, Clark, Jerry H., Summy, Gil S., Liu, Yingmei, Wimberger, Sandro
Publikováno v:
Phys. Rev. A 106, 043318 (2022)
We present a concrete theoretical proposal for detecting topological phase transitions in double kicked atom-optics kicked rotors with internal spin-1/2 degree of freedom. The implementation utilizes a kicked Bose-Einstein condensate evolving in one-
Externí odkaz:
http://arxiv.org/abs/2210.11898
Autor:
Bolik, Nikolai, Groiseau, Caspar, Clark, Jerry H., Gresch, Alexander, Dadras, Siamak, Summy, Gil S., Liu, Yingmei, Wimberger, Sandro
Publikováno v:
Phys. Rev. A 106, 033307 (2022)
Over the last decade there have been many advances in studies of quantum walks (QWs) including a momentum-space QW recently realized in our spinor Bose-Einstein condensate system. This QW possessed behaviors that generally agreed with theoretical pre
Externí odkaz:
http://arxiv.org/abs/2205.07732
Publikováno v:
J. Phys. B: At. Mol. Opt. Phys. 53, 065301 (2020)
The atom-optics kicked rotor can be used to prepare specific momentum distributions on a discrete basis set. We implement a continuous-time quantum walk and a quantum search protocol in this momentum basis. In particular we propose ways to identify a
Externí odkaz:
http://arxiv.org/abs/2002.09139
Publikováno v:
Phys. Rev. A 99, 043617 (2019)
We report on a discrete-time quantum walk that uses the momentum of ultra-cold rubidium-87 atoms as the walk space and two internal atomic states as the coin degree of freedom. Each step of the walk consists of a coin toss (a microwave pulse) followe
Externí odkaz:
http://arxiv.org/abs/1809.09282
Publikováno v:
Phys. Rev. Lett. 121, 070402 (2018)
We present a discrete-time, one-dimensional quantum walk based on the entanglement between the momentum of ultracold rubidium atoms (the walk space) and two internal atomic states (the "coin" degree of freedom). Our scheme is highly flexible and can
Externí odkaz:
http://arxiv.org/abs/1802.08160
Autor:
Ni, Jiating, Dadras, Siamak, Lam, Wa Kun, Shrestha, Rajendra K., Sadgrove, Mark, Wimberger, Sandro, Summy, Gil S.
Publikováno v:
Ann. Phys. 529 (8), 1600335 (2017)
Quantum-resonance ratchets have been realized over the last ten years for the production of directed currents of atoms. These non-dissipative systems are based on the interaction of a Bose-Einstein condensate with an optical standing wave potential t
Externí odkaz:
http://arxiv.org/abs/1712.09890
Autor:
Ni, Jiating, Lam, Wa Kun, Dadras, Siamak, Borunda, Mario F., Wimberger, Sandro, Summy, Gil S.
Publikováno v:
Phys. Rev. A 94, 043620 (2016)
We demonstrate quantum resonance ratchets created with Bose-Einstein condensates exposed to pulses of an off-resonant standing light wave. We show how some of the basic properties of the ratchets are controllable through the creation of different ini
Externí odkaz:
http://arxiv.org/abs/1608.09003
Autor:
Weiß, Marcel, Groiseau, Caspar, Lam, W. K., Burioni, Raffaella, Vezzani, Alessandro, Summy, Gil S., Wimberger, Sandro
A kicking sequence of the atom optics kicked rotor at quantum resonance can be interpreted as a quantum random walk in momentum space. We show how to steer such a random walk by applying a random sequence of intensities and phases of the kicking latt
Externí odkaz:
http://arxiv.org/abs/1506.09101
Autor:
d'Arcy, Michael B., Godun, Rachel M., Summy, Gil S., Guarneri, Italo, Wimberger, Sandro, Fishman, Shmuel, Buchleitner, Andreas
Publikováno v:
Phys. Rev. E 69, 027201 (2004)
The effect of decoherence, induced by spontaneous emission, on the dynamics of cold atoms periodically kicked by an optical lattice is experimentally and theoretically studied. Ideally, the mean energy growth is essentially unaffected by weak decoher
Externí odkaz:
http://arxiv.org/abs/quant-ph/0307034
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