Superconducting Resonator-Rydberg Atom Hybrid in the Strong Coupling Regime
We propose a promising hybrid quantum system, where a highly-excited atom strongly interacts with a superconducting LC oscillator via the electric field of capacitor. An external electrostatic field is applied to tune the energy spectrum of atom. The atomic qubit is implemented by two eigenstates ne...
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| creator | Yu, Deshui Landra, Alessandro Maria Martinez Valado Hufnagel, Christoph Kwek, Leong Chuan Amico, Luigi Dumke, Rainer |
| description | We propose a promising hybrid quantum system, where a highly-excited atom strongly interacts with a superconducting LC oscillator via the electric field of capacitor. An external electrostatic field is applied to tune the energy spectrum of atom. The atomic qubit is implemented by two eigenstates near an avoided-level crossing in the DC Stark map of Rydberg atom. Varying the electrostatic field brings the atomic-qubit transition on- or off-resonance to the microwave resonator, leading to a strong atom-resonator coupling with an extremely large cooperativity. Like the nonlinearity induced by Josephson junctions in superconducting circuits, the large atom-resonator interface disturbs the harmonic potential of resonator, resulting in an artificial two-level particle. Different universal two-qubit logic gates can also be performed on our hybrid system within the space where an atomic qubit couples to a single photon with an interaction strength much larger than any relaxation rates, opening the door to the cavity-mediated state transmission. |
| doi_str_mv | 10.48550/arxiv.1611.05156 |
| format | Article |
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| subjects | Coupling Eigenvectors Electric fields Electrical junctions Energy spectra Hybrid systems Josephson junctions Logic circuits Physics - Atomic Physics Physics - Quantum Physics Quantum theory Qubits (quantum computing) Resonators Superconductivity |
| title | Superconducting Resonator-Rydberg Atom Hybrid in the Strong Coupling Regime |
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