Life after charge noise: recent results with transmon qubits

Abstract

We review the main theoretical and experimental results for the transmon, a superconducting charge qubit derived from the Cooper pair box. The increased ratio of the Josephson to charging energy results in an exponential suppression of the transmon's sensitivity to 1/f charge noise. This has been observed experimentally and yields homogeneous broadening, negligible pure dephasing, and long coherence times of up to 3 microseconds. Anharmonicity of the energy spectrum is required for qubit operation, and has been proven to be sufficient in transmon devices. Transmons have been implemented in a wide array of experiments, demonstrating consistent and reproducible results in very good agreement with theory.

6 pages, 4 figures. Review article, accepted for publication in Quantum Inf. Proc

References in corpus (23)

• Charge insensitive qubit design derived from the Cooper pair box
• Cavity quantum electrodynamics for superconducting electrical circuits: an architecture for quantum computation
• Quantum state engineering with Josephson-junction devices
• Coherent control of macroscopic quantum states in a single-Cooper-pair box
• Manipulating the Quantum State of an Electrical Circuit
• Coupling Superconducting Qubits via a Cavity Bus
• Resolving photon number states in a superconducting circuit
• Suppressing Charge Noise Decoherence in Superconducting Charge Qubits
• Climbing the Jaynes-Cummings Ladder and Observing its Sqrt(n) Nonlinearity in a Cavity QED System
• Controlling the spontaneous emission of a superconducting transmon qubit
• Multi-valued Logic Gates for Quantum Computation
• Decoherence of flux qubits due to 1/f flux noise
• Nonlinear response of the vacuum Rabi resonance
• Low-decoherence flux qubit
• Randomized benchmarking and process tomography for gate errors in a solid-state qubit
• Nonequilibrium quasiparticles and $2e$ periodicity in single-Cooper-pair transistors
• State tomography of capacitively shunted phase qubits with high fidelity
• Decoherence in Josephson-junction qubits due to critical current fluctuations
• Superconducting Qubits: A Short Review
• Observation of quantum capacitance in the Cooper-pair transistor
• Measuring the Decoherence of a Quantronium Qubit with the Cavity Bifurcation Amplifier
• Kinetics of the superconducting charge qubit in the presence of a quasiparticle
• Quasiparticle Poisoning and Quantum Coherence in a Differential Charge Qubit

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