Effect of Measurement on the Periodicity of the Coulomb Staircase of a Superconducting Box

Abstract

We report on the effect of the back-action of a Single Cooper Pair Transistor electrometer (E) on the measurement of charge on the island of a superconducting box (B). The charge is e-periodic in the gate bias of B when E is operated near voltages 2Delta/e or 4Delta/e. We show that this is due to quasiparticle poisoning of B at a rate proportional to the number of quasiparticle tunneling events in E per second. We are able to eliminate this back action and recover 2e charge periodicity using a new measurement method based on switching current modulation of E.

4 pages, 4 figures, revised version

References in corpus (2)

• Manipulating the Quantum State of an Electrical Circuit
• Radio-frequency Bloch-transistor electrometer

Cited by in corpus (31)

• Introduction to topological superconductivity and Majorana fermions
• An RF-Driven Josephson Bifurcation Amplifier for Quantum Measurements
• Scheme to measure Majorana fermion lifetimes using a quantum dot
• Thermoelectric signatures of a Majorana bound state coupled to a quantum dot
• Quasiparticle decay rate of Josephson charge qubit oscillations
• Microsecond resolution of quasiparticle tunneling in the single-Cooper-pair-transistor
• Time-domain measurements of quasiparticle tunneling rates in a single-Cooper-pair transistor
• Spatially-resolved probing of a non-equilibrium superconductor
• Detection of Majorana Kramers pairs using a quantum point contact
• Distinguishing parity-switching mechanisms in a superconducting qubit
• Parity effect in superconducting aluminum single electron transistors with spatial gap profile controlled by film thickness
• Electric field control of radiative heat transfer in a superconducting circuit
• Using materials for quasiparticle engineering
• Observation of 2e-periodic Supercurrents in Nanowire Single-Cooper-Pair Transistors
• Kinetics of quasiparticle trapping in a Cooper-pair box
• Evidence of Cooper pair pumping with combined flux and voltage control
• Very high frequency spectroscopy and tuning of a single-Cooper-pair-transistor with an on-chip generator
• Josephson charge-phase qubit with radio frequency readout: coupling and decoherence
• Coulomb blockade of Cooper pair tunneling and parity effects in the Cooper pair transistor
• Quasiparticle poisoning effects on the dynamics of topological Josephson junctions
• Active quasiparticle suppression in a non-equilibrium superconductor
• Detecting parity effect in a superconducting device in the presence of parity switches
• Narrow band microwave radiation from a biased single-Cooper-pair transistor
• Effect of quantum fluctuations on even-odd energy difference in a Cooper-pair box
• Crossover from time-correlated single-electron tunneling to that of Cooper pairs
• Rf-induced transport of Cooper pairs in superconducting single electron transistors in a dissipative environment
• Pulse and hold strategy for switching current measurements
• Quasi-particle transitions in charge-phase qubits probed by rf oscillations
• A self-calibrating superconducting pair-breaking detector
• Hybrid Quantum Interferometer in Bifurcation Mode as a Latching Quantum Readout
• Energy relaxation of superconducting charge qubit via Andreev processes