Cavity QED in a molecular ion trap

Abstract

We propose an approach for studying quantum information and performing high resolution spectroscopy of rotational states of trapped molecular ions using an on-chip superconducting microwave resonator. Molecular ions have several advantages over neutral molecules. Ions can be loaded into deep (1 eV) RF traps and are trapped independent of the electric dipole moment of their rotational transition. Their charge protects them from motional dephasing and prevents collisional loss, allowing 1 s coherence times when used as a quantum memory, with detection of single molecules possible in <10 ms. An analysis of the detection efficiency and coherence properties of the molecules is presented.

9 pages, 1 figure

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• Quantum entanglement between an atom and a molecule
• Circuit QED and engineering charge based superconducting qubits
• Challenges of laser-cooling molecular ions
• Cavity quantum electrodynamic readout of a solid-state spin sensor
• Dipolar quantum logic for freely-rotating trapped molecular ions
• The role of electronic excitation in cold atom-ion chemistry
• Superconducting microfabricated ion traps
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• Prospects for Doppler cooling of three-electronic-level molecules
• Dipole-phonon quantum logic with trapped polar molecular ions
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• Technologies for trapped-ion quantum information systems
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• Action spectroscopy of SrCl${}^{+}$ using an integrated ion trap time-of-flight mass spectrometer
• Production of translationally cold barium monohalide ions
• Molecular quantum rotors in gyroscopic motion with a nonspreading rotational wavepacket
• Laser Scheme for Doppler Cooling of the Hydroxyl Cation (OH${}^{+}$)
• Photodissociation spectroscopy of the dysprosium monochloride molecular ion
• Polaritonic control of blackbody infrared radiative dissociation
• Doppler Amplification of Motion of a Trapped Three-Level Ion
• Long-range model of vibrational autoionization in core-nonpenetrating Rydberg states of NO
• Rotational excitation in sympathetic cooling of diatomic molecular ions by laser-cooled atomic ions
• Resonator-assisted quantum transduction between superconducting qubits and trapped atomic systems via Rydberg levels