Zobrazeno 1 - 10
of 500
pro vyhledávání: '"Prentiss M"'
Publikováno v:
Phys. Rev. Lett. 101, 063901 (2008)
We demonstrate optical nonlinearities due to the interaction of weak optical fields with the collective motion of a strongly dispersive ultracold gas. The combination of a recoil-induced resonance (RIR) in the high gain regime and optical waveguiding
Externí odkaz:
http://arxiv.org/abs/0804.2306
We demonstrate perfect coherence preservation in an atom interferometer perturbed by kicks from off-resonant standing wave pulses. Under most conditions, the decoherence induced by the pulses reduces the signal; however, the coherence is perfectly pr
Externí odkaz:
http://arxiv.org/abs/0803.4153
It had been proposed that overstretching double stranded DNA from the 5-5 ends will produce a new fiber form of dsDNA that is narrower than the S form that has been suggested to result when the dsDNA is overstretched from the 3-3 ends. We present the
Externí odkaz:
http://arxiv.org/abs/0704.3753
Autor:
Jo, G. -B., Shin, Y., Will, S., Pasquini, T. A., Saba, M., Ketterle, W., Pritchard, D. E., Vengalattore, M., Prentiss, M.
Publikováno v:
Phy. Rev. Lett. 98, 030407 (2007)
We measured the relative phase of two Bose-Einstein condensates confined in an radio frequency induced double well potential on an atom chip. We observed phase coherence between the separated condensates for times up to 200 ms after splitting, a fact
Externí odkaz:
http://arxiv.org/abs/cond-mat/0608585
Autor:
Shin, Y., Sanner, C., Jo, G. -B., Pasquini, T. A., Saba, M., Ketterle, W., Pritchard, D. E., Vengalattore, M., Prentiss, M.
Publikováno v:
Phys. Rev. A 72, 021604(R) (2005)
We have used a microfabricated atom chip to split a single Bose-Einstein condensate of sodium atoms into two spatially separated condensates. Dynamical splitting was achieved by deforming the trap along the tightly confining direction into a purely m
Externí odkaz:
http://arxiv.org/abs/cond-mat/0506464
Autor:
Shin, Y., Saba, M., Vengalattore, M., Pasquini, T. A., Sanner, C., Leanhardt, A. E., Prentiss, M., Pritchard, D. E., Ketterle, W.
Publikováno v:
Phys. Rev. Lett. 93, 160406 (2004)
Doubly quantized vortices were topologically imprinted in $|F=1>$ $^{23}$Na condensates, and their time evolution was observed using a tomographic imaging technique. The decay into two singly quantized vortices was characterized and attributed to dyn
Externí odkaz:
http://arxiv.org/abs/cond-mat/0407045
Publikováno v:
Biophysical Journal, 88, 2752-2765, (2005).
Under constant applied force, the separation of double-stranded DNA into two single strands is known to proceed through a series of pauses and jumps. Given experimental traces of constant-force unzipping, we present a method whereby the locations of
Externí odkaz:
http://arxiv.org/abs/cond-mat/0406246
We separate double stranded lambda phage DNA by applying a fixed force at a constant temperature ranging from 15C to 50C, and measure the minimum force required to separate the two strands, providing the first experimental determination of the phase
Externí odkaz:
http://arxiv.org/abs/cond-mat/0310633
Publikováno v:
Opt Comm (2003)
We report a compact (<20cm3), robust source for producing a bright flux of cold atoms, which can be loaded efficiently into a magnetic guide. A continuous flux of up to 8 x 109 87Rb atoms/s have been produced from this 2D+ vapor cell MOT. The flux ha
Externí odkaz:
http://arxiv.org/abs/physics/0308108
Autor:
Thywissen, J. H., Prentiss, M.
Publikováno v:
New J. Phys. 7, 47 (2005)
We demonstrate the use of frequency-encoded light masks in neutral atom lithography. We demonstrate that multiple features can be patterned across a monotonic potential gradient. Features as narrow as 0.9 microns are fabricated on silicon substrates
Externí odkaz:
http://arxiv.org/abs/physics/0209084