Microwave Control of Atomic Motion in Optical Lattices

Förster, Leonid; Karski, Michał; Choi, Jong‐Min; Steffen, Andreas; Alt, Wolfgang; Meschede, Dieter; Widera, Artur; Montaño, Enrique; Lee, J. H.; Rakreungdet, Worawarong; Jessen, Poul

doi:10.1103/physrevlett.103.233001

Cited by 75 publications

(85 citation statements)

References 33 publications

(30 reference statements)

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“…Most recently, in spin-dependent lattices, experimenters have harnessed microwave signals to cool and control atomic motion [15,17]. Our work with an optical tweezer breaks with typical lattice experiments and instead more closely resembles the sideband cooling and spectroscopy techniques used with atomic ions [18].…”

mentioning

confidence: 89%

“…Approaches have included dramatic demonstrations of the superfluid-Mott insulator transition of an evaporatively cooled gas [7,8] and exploration of the laser cooling of collections of atoms in a lattice [9][10][11][12][13][14][15][16][17]. Most recently, in spin-dependent lattices, experimenters have harnessed microwave signals to cool and control atomic motion [15,17].…”

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confidence: 99%

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Cooling a Single Atom in an Optical Tweezer to Its Quantum Ground State

2012

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We report cooling of a single neutral atom to its three-dimensional vibrational ground state in an optical tweezer. After employing Raman sideband cooling for tens of milliseconds, we measure via sideband spectroscopy a three-dimensional ground-state occupation of about 90%. We further observe coherent control of the spin and motional state of the trapped atom. Our demonstration shows that an optical tweezer, formed simply by a tightly focused beam of light, creates sufficient confinement for efficient sideband cooling. This source of ground-state neutral atoms will be instrumental in numerous quantum simulation and logic applications that require a versatile platform for storing and manipulating ultracold single neutral atoms. For example, these results will improve current optical-tweezer experiments studying atom-photon coupling and Rydberg quantum logic gates, and could provide new opportunities such as rapid production of single dipolar molecules or quantum simulation in tweezer arrays.

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confidence: 89%

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confidence: 99%

Cooling a Single Atom in an Optical Tweezer to Its Quantum Ground State

2012

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“…In particular, these techniques can be used to measure the temperature or to perform motional ground-state cooling in systems where the lowest part of the spectrum has modes equally spaced in energy [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Sideband Rabi spectroscopy of finite-temperature trapped Bose gases

et al. 2016

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We use Rabi spectroscopy to explore the low-energy excitation spectrum of a finite-temperature Bose gas of rubidium atoms across the phase transition to a Bose-Einstein condensate (BEC). To record this spectrum, we coherently drive the atomic population between two spin states. A small relative displacement of the spin-specific trapping potentials enables sideband transitions between different motional states. The intrinsic nonlinearity of the motional spectrum, mainly originating from two-body interactions, makes it possible to resolve and address individual excitation lines. Together with sensitive atom counting, this constitutes a feasible technique to count single excited atoms of a BEC and to determine the temperature of nearly pure condensates. As an example, we show that for a nearly pure BEC of N = 800 atoms the first excited state has a population of less than five atoms, corresponding to an upper bound on the temperature of 30 nK.

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“…To quantify the cooling performance of EIT-cooling in the dipole trap and to compare it with standard molasses-cooling, we apply microwave sideband spectroscopy by making the lattice slightly state-dependent [35]. Fig.…”

Section: Measurementsmentioning

confidence: 99%

Electromagnetically-induced-transparency control of single-atom motion in an optical cavity

et al. 2014

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We demonstrate cooling of the motion of a single neutral atom confined by a dipole trap inside a high-finesse optical resonator. Cooling of the vibrational motion results from EIT-like interference in an atomic Λ-type configuration, where one transition is strongly coupled to the cavity mode and the other is driven by an external control laser. Good qualitative agreement with the theoretical predictions is found for the explored parameter ranges. Further we demonstrate EIT-cooling of atoms in the dipole trap in free space, reaching the ground state of axial motion. By means of a direct comparison with the cooling inside the resonator, the role of the cavity becomes evident by an additional cooling resonance. These results pave the way towards a controlled interaction between atomic, photonic and mechanical degrees of freedom.

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Microwave Control of Atomic Motion in Optical Lattices

Cited by 75 publications

References 33 publications

Cooling a Single Atom in an Optical Tweezer to Its Quantum Ground State

Cooling a Single Atom in an Optical Tweezer to Its Quantum Ground State

Sideband Rabi spectroscopy of finite-temperature trapped Bose gases

Electromagnetically-induced-transparency control of single-atom motion in an optical cavity

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