Rapid laser-free ion cooling by controlled collision

Abstract

I propose a method to remove the axial motional excitation from an ion qubit within a few oscillation periods of a harmonic trap. The principle is to prepare another coolant ion in its motional ground state, and then apply a phonon beam splitter to swap the motional state between the ions without affecting the internal state. This method requires only the precise control of the trapping potential, thus its performance does not suffer from the limitations of current laser-cooling schemes. With sufficient coolant ions pre-prepared, this method can rapidly re-cool ion qubits during quantum information processing.

5 pages, 3 figures. (v2) Substantially re-written with corrected theory and more details

References in corpus (10)

• Quantum computing with trapped ions
• Large Scale Modular Quantum Computer Architecture with Atomic Memory and Photonic Interconnects
• Coherent Diabatic Ion Transport and Separation in a Multi-Zone Trap Array
• Controlling fast transport of cold trapped ions
• Fast atomic transport without vibrational heating
• Ion trap transducers for quantum electromechanical oscillators
• Sympathetic EIT laser cooling of motional modes in an ion chain
• A proposal for a scalable universal bosonic simulator using individually trapped ions
• Quantum control of the motional states of trapped ions through fast switching of trapping potentials
• Decoherence and dephasing errors caused by D.C. Stark effect in rapid ion transport

Cited by in corpus (7)

• High-fidelity bosonic quantum state transfer using imperfect transducers and interference
• Universal hybrid quantum computing in trapped ions
• Motional squeezing for trapped ion transport and separation
• Rapid Exchange Cooling with Trapped Ions
• Robust dynamical exchange cooling with trapped ions
• Characterization and optimized engineering of bosonic quantum interfaces under single-mode operational constraints
• Fast Ground State to Ground State Separation of Small Ion Crystals