Symmetric control of Rydberg ensembles.

We study the production of arbitrary superpositions of Dicke states via optimal control. We show that N atomic hyperfine qubits, interacting symmetrically via the Rydberg blockade, are well described by the Jaynes-Cummings Hamiltonian and fully controllable by phase-modulated microwaves driving Rydberg-dressed states. With currently feasible parameters, it is possible to generate states of ∼ten hyperfine qubits in ∼1 μs, assuming a fast microwave phase switching time. The same control can be achieved with a "dressed-ground control" scheme, which reduces the demands for fast phase switching at the expense of increased total control time.We study the production of arbitrary superpositions of Dicke states via optimal control. We show that N atomic hyperfine qubits, interacting symmetrically via the Rydberg blockade, are well described by the Jaynes-Cummings Hamiltonian and fully controllable by phase-modulated microwaves driving Rydberg-dressed states. With currently feasible parameters, it is possible to generate states of ∼ten hyperfine qubits in ∼1 μs, assuming a fast microwave phase switching time. The same control can be achieved with a "dressed-ground control" scheme, which reduces the demands for fast phase switching at the expense of increased total control time.

arXiv:1607.03169Physical Review LettersNov 14, 201627 citations

$\cal{PT}$ -symmetry in Rydberg atoms$\cal{PT}$ -symmetry in Rydberg atoms

Ziauddin Ziauddin, You-Lin Chuang, Ray‐Kuang Lee

We propose a scheme to realize parity-time ( PT )-symmetry in an ensemble of strongly interacting Rydberg atoms, which act as superatoms due to the dipole blockade mechanism. We show that Rydberg-dressed 87 Rb atoms in a four-level inverted Y -type configuration is highly efficient to generate the refractive index for a probe field, with a symmetric (antisymmetric) profile spatially in the corresponding real (imaginary) part. Comparing with earlier investigations, the present scheme provides a versatile platform to control the system from PT -symmetry to non- PT -symmetry via different external parameters, i.e. , coupling field detuning, probe field intensity and control field intensity.We propose a scheme to realize parity-time ( PT )-symmetry in an ensemble of strongly interacting Rydberg atoms, which act as superatoms due to the dipole blockade mechanism. We show that Rydberg-dressed 87 Rb atoms in a four-level inverted Y -type configuration is highly efficient to generate the refractive index for a probe field, with a symmetric (antisymmetric) profile spatially in the corresponding real (imaginary) part. Comparing with earlier investigations, the present scheme provides a versatile platform to control the system from PT -symmetry to non- PT -symmetry via different external parameters, i.e. , coupling field detuning, probe field intensity and control field intensity.

Europhysics Letters (EPL)Jul 1, 201613 citations

Precise manipulation of Rydberg wave packets

B. Wyker, F. B. Dunning, Carlos O Reinhold +2 more

Bulletin of the American Physical SocietyMay 27, 20100 citations

Complete Measurement and Control of Rydberg Wave Packets

T. C. Weinacht, Jaewook Ahn, P. H. Bucksbaum

Springer series in chemical physicsJan 1, 19980 citations

\cal{PT}

-symmetry in Rydberg atoms