Microwave control of atomic motion in optical lattices.

  title={Microwave control of atomic motion in optical lattices.},
  author={Leonid F{\"o}rster and Michał Karski and Jai-Min Choi and Andreas Steffen and Wolfgang Alt and Dieter Meschede and Artur Widera and Enrique Montano and Jae Hoon Lee and Worawarong Rakreungdet and Poul S. Jessen},
  journal={Physical review letters},
  volume={103 23},
We control the quantum mechanical motion of neutral atoms in an optical lattice by driving microwave transitions between spin states whose trapping potentials are spatially offset. Control of this offset with nanometer precision allows for adjustment of the coupling strength between different motional states, analogous to an adjustable effective Lamb-Dicke factor. This is used both for efficient one-dimensional sideband cooling of individual atoms to a vibrational ground state population of 97… 

Figures from this paper

Microwave control of atomic motional states in a spin-dependent optical lattice

Spin-dependent optical potentials allow us to use microwave radiation to manipulate the motional state of trapped neutral atoms (Förster et al 2009 Phys. Rev. Lett. 103 233001). Here, we discuss this

Laser controlled tunneling in a vertical optical lattice.

Raman laser pulses are used to induce coherent tunneling between neighboring sites of a vertical 1D optical lattice, and the coherence time of these superpositions is investigated by realizing a spatial interferometer.

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

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

Quantum Control of Vibrational States in an Optical Lattice

Quantum Control of Vibrational States in an Optical Lattice Chao Zhuang Doctor of Philosophy Graduate Department of Physics University of Toronto 2013 In this thesis, I present an experimental study

Microwave quantum logic gates for trapped ions

The approach, which involves integrating the quantum control mechanism into the trapping device in a scalable manner, could be applied to quantum information processing, simulation and spectroscopy.

Coherently walking, rocking and blinding single neutral atoms

Advances in the preparation and detection, but most importantly in the coherent manipulation of single neutral atoms have allowed the observation of intriguing phenomena of quantum physics in recent

Single atoms in the ring lattice for quantum information processing and quantum simulation

We have demonstrated preparing and rotating single neutral rubidium atoms in an optical ring lattice generated by a spatial light modulator, inserting two atoms into a single microscopic optical

Coherent dynamics and state detection of single atoms in a cavity

In this thesis, a model system of quantum optics is experimentally studied - a single atom coupled to a high-finesse optical cavity. Upon excitation with laser pulses, the atom-cavity system

Quantum walks and quantum simulations with Bloch-oscillating spinor atoms

We propose a scheme for the realization of a quantum walker and a quantum simulator for the Dirac equation with ultracold spinor atoms in driven optical lattices. A precise control of the dynamics of



Optimal control of atom transport for quantum gates in optical lattices

By means of optimal control techniques we model and optimize the manipulation of the external quantum state center-of-mass motion of atoms trapped in adjustable optical potentials. We consider in

Coherent transport of neutral atoms in spin-dependent optical lattice potentials.

The controlled coherent transport and splitting of atomic wave packets in spin-dependent optical lattice potentials are demonstrated and open intriguing possibilities for quantum state engineering of many body states.

Coherent transport of single atoms in optical lattices

We describe a technique for transferring a two-level atom between two adjacent potential wells of an optical lattice, using pairs of pump and Stokes pulses, each resonantly coupling the same pair of

Controlled exchange interaction between pairs of neutral atoms in an optical lattice

This experiment uses an optical lattice of double-well potentials to isolate and manipulate arrays of paired 87Rb atoms, inducing controlled entangling interactions within each pair, and demonstrates the essential component of a neutral atom quantum SWAP gate (which interchanges the state of two qubits), which forms a set of universal gates for quantum computation.

Resolved-Sideband Raman Cooling to the Ground State of an Optical Lattice

We trap neutral Cs atoms in a two-dimensional optical lattice and cool them close to the zero point of motion by resolved-sideband Raman cooling. Sideband cooling occurs via transitions between the

Coherence properties and quantum state transportation in an optical conveyor belt.

Coherent quantum bit operations along with quantum state transport open the route towards a "quantum shift register" of individual neutral atoms, which preserves the atomic coherence with slight reduction of coherence time.

Generation of nonclassical motional states of a trapped atom.

The creation of thermal, Fock, coherent, and squeezed states of motion of a harmonically bound Be ion, which is trapped in the regime where the coupling between its motional and internal states can be described by a Jaynes-Cummings-type interaction.


We propose a new system for implementing quantum logic gates: neutral atoms trapped in a very far-off-resonance optical lattice. Pairs of atoms are made to occupy the same well by varying the

Coherent control of atom dynamics in an optical lattice

On the basis of a simple exactly solvable model we discuss the possibilities for state preparation and state control of atoms in a periodic optical potential. In addition to the periodic potential a

Quantum gates with neutral atoms: Controlling collisional interactions in time-dependent traps

We theoretically study specific schemes for performing a fundamental two-qubit quantum gate via controlled atomic collisions by switching microscopic potentials. In particular we calculate the