Zobrazeno 1 - 10
of 183
pro vyhledávání: '"Walker, T. G."'
We propose to integrate dark-state based localization techniques into a neutral atom quantum computing architecture and numerically investigate two specific schemes. The first scheme implements state-selective projective measurement by scattering pho
Externí odkaz:
http://arxiv.org/abs/2301.03654
When a quantum system is put into an excited state, it will decay back to the ground state through a process termed spontaneous emission. It is generally assumed that spontaneous emission between different individual emitters would not be coherent wi
Externí odkaz:
http://arxiv.org/abs/2112.07580
Publikováno v:
Opt. Express 28, 36696-36705 (2020)
In this work we demonstrate a high sensitivity atomic gradiometer capable of operation in earth-field level environments. We apply a light-pulse sequence at four times the Larmor frequency to achieve gradiometer sensitivity <20 fT/cm/$\sqrt{\rm Hz}$
Externí odkaz:
http://arxiv.org/abs/2008.13234
Publikováno v:
Phys. Rev. A 100, 061403 (2019)
We demonstrate a transversely polarized spin-exchange pumped noble gas comagnetometer which suppresses systematic errors from longitudinal polarization. Rb atoms as well as $^{131}$Xe and $^{129}$Xe nuclei are simultaneously polarized perpendicular t
Externí odkaz:
http://arxiv.org/abs/1910.02156
Atomic magnetometers (AMs) offer many advantages over superconducting quantum interference devices (SQUIDs) due to, among other things, having comparable sensitivity while not requiring cryogenics. One of the major limitations of AMs is the challenge
Externí odkaz:
http://arxiv.org/abs/1906.03227
This article reviews the physics and technology of producing large quantities of highly spin-polarized, or hyperpolarized, $^3$He nuclei using spin-exchange (SEOP) and metastability-exchange (MEOP) optical pumping, and surveys applications of polariz
Externí odkaz:
http://arxiv.org/abs/1612.04178
Publikováno v:
Phys. Rev. Lett. 115, 093601 (2015)
We demonstrate $|W\rangle$ state encoding of multi-atom ensemble qubits. Using optically trapped Rb atoms the $T_2$ coherence time is 2.6(3) ms for $\bar N=7.6$ atoms and scales approximately inversely with the number of atoms. Strong Rydberg blockad
Externí odkaz:
http://arxiv.org/abs/1501.04083
We demonstrate that spin-exchange dephasing of Larmor precession at near-earth-scale fields is effectively eliminated by dressing the alkali-metal atom spins in a sequence of AC-coupled 2-pi pulses, repeated at the Larmor precession frequency. The co
Externí odkaz:
http://arxiv.org/abs/1304.3737
Autor:
Bulatowicz, M., Griffith, R., Larsen, M., Mirijanian, J., Walker, T. G., Fu, C. B., Smith, E., Snow, W. M., Yan, H.
We place new limits on potential T- and P- violating monopole-dipole interactions between unpolarized nucleons and neutrons using dual species magnetic resonance in polarzed Xe gas. Free-induction decay transients with relaxation times ~20 s allow hi
Externí odkaz:
http://arxiv.org/abs/1301.5224
In atomic magnetometers, the vector AC-Stark shift associated with circularly polarized light generates spatially varying effective magnetic fields which limit the magnetometer response and serve as sources of noise. We describe a scheme whereby opti
Externí odkaz:
http://arxiv.org/abs/1212.5624