Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Summy, G S"'
Autor:
Clark, J. H., Groiseau, C., Shaw, Z. N., Dadras, S., Binegar, C., Wimberger, S., Summy, G. S., Liu, Y.
We have realized a quantum walk in momentum space with a rubidium spinor Bose-Einstein condensate by applying a periodic kicking potential as a walk operator and a resonant microwave pulse as a coin toss operator. The generated quantum walks appear t
Externí odkaz:
http://arxiv.org/abs/2108.09276
Publikováno v:
Phys. Rev. E vol. 88, 034901 (2013)
We report measurements of dynamical tunneling rates of a Bose-Einstein condensate across a barrier in classical phase space. The atoms are initially prepared in quantum states that extend over a classically regular island region. We focus on the spec
Externí odkaz:
http://arxiv.org/abs/1305.1828
Publikováno v:
Phys. Rev. A 86, 043617(2012)
We experimentally investigate the phenomenon of a quantum ratchet created by exposing a Bose-Einstein Condensate to short pulses of a potential which is periodic in both space and time. Such a ratchet is manifested by a directed current of particles,
Externí odkaz:
http://arxiv.org/abs/1210.6025
We study the crossover between classical and quantum dynamics by observing the behavior of a quantum ratchet created by exposing a Bose-Einstein condensate to short pulses of a potential which is periodic in both space and time. Such a ratchet is man
Externí odkaz:
http://arxiv.org/abs/1210.5657
Publikováno v:
Phys. Rev. E 87, 020902(R)(2013)
The sensitivity of the fidelity in the kicked rotor to an acceleration is experimentally and theoretically investigated. We used a Bose-Einstein condensate exposed to a sequence of pulses from a standing light wave followed by a single reversal pulse
Externí odkaz:
http://arxiv.org/abs/1210.5656
We experimentally investigate the sub-Fourier behavior of a $\delta$-kicked rotor resonance by performing a measurement of the fidelity or overlap of a Bose-Einstein condensate (BEC) exposed to a periodically pulsed standing wave. The temporal width
Externí odkaz:
http://arxiv.org/abs/1004.0683
We report the observation of high order resonances of the quantum $\delta$-kicked accelerator using a BEC kicked by a standing wave of light. The signature of these resonances is the existence of quantum accelerator modes. For the first time quantum
Externí odkaz:
http://arxiv.org/abs/0706.1587
Publikováno v:
Physical Review Letters 100, 024103 (2008)
Quantum-resonance ratchets associated with the periodically kicked particle are experimentally realized for the first time. This is achieved by using a Bose-Einstein condensate exposed to a pulsed standing light wave and prepared in an initial state
Externí odkaz:
http://arxiv.org/abs/0706.0871
We experimentally explore the underlying pseudo-classical phase space structure of the quantum delta kicked accelerator. This was achieved by exposing a Bose-Einstein condensate to the spatially corrugated potential created by pulses of an off-resona
Externí odkaz:
http://arxiv.org/abs/physics/0609203
We study the evolution of a trapped atomic cloud subject to a trapping frequency jump for two cases: stationary and moving center of mass. In the first case, the frequency jump initiates oscillations in the cloud's momentum and size. At certain times
Externí odkaz:
http://arxiv.org/abs/physics/0510092