Temperature square dependence of the low frequency 1/f charge noise in the Josephson junction qubits

Abstract

To verify the hypothesis about the common origin of the low frequency 1/f noise and the quantum f noise recently measured in the Josephson charge qubits, we study temperature dependence of the 1/f noise and decay of coherent oscillations. T^2 dependence of the 1/f noise is experimentally demonstrated, which supports the hypothesis. We also show that dephasing in the Josephson charge qubits off the electrostatic energy degeneracy point is consistently explained by the same low frequency 1/f noise that is observed in the transport measurements.

arXiv comment4 pages, 2 figures

References in corpus (14)

• Coherent control of macroscopic quantum states in a single-Cooper-pair box
• Decoherence in Josephson Qubits from Dielectric Loss
• Decoherence in a superconducting quantum bit circuit
• AC-Stark Shift and Dephasing of a Superconducting Qubit Strongly Coupled to a Cavity Field
• Charge echo in a Cooper-pair box
• Dephasing of a superconducting qubit induced by photon noise
• Quantum noise in the Josephson charge qubit
• Low- and high-frequency noise from coherent two-level systems
• Initial decoherence in solid state qubits
• Noise in Al single electron transistors of stacked design
• Quantum two level systems and Kondo-like traps as possible sources of decoherence in superconducting qubits
• Models of environment and T_1 relaxation in Josephson Charge Qubits
• Low-Temperature Decoherence of Qubit Coupled to Background Charges
• Ohmic and step noise from a single trapping center hybridized with a Fermi sea

Cited by in corpus (54)

• 1/f noise: implications for solid-state quantum information
• How to Enhance Dephasing Time in Superconducting Qubits
• Dispersive regime of circuit QED: photon-dependent qubit dephasing and relaxation rates
• Decoherence in Solid State Qubits
• Dephasing of a superconducting flux qubit
• Coherence times of dressed states of a superconducting qubit under extreme driving
• Decoherence in qubits due to low-frequency noise
• Temperature Dependence of Electric Field Noise Above Gold Surfaces
• Parallel pumping of electrons
• Quantum probes for the cutoff frequency of Ohmic environments
• Non-Markovian qubit dynamics in the presence of 1/f noise
• Geometrical spin dephasing in quantum dots
• Macroscopic Resonant Tunneling in the Presence of Low Frequency Noise
• Anomalous decoherence in a dissipative two-level system
• Quantum decoherence of a charge qubit in a spin-fermion model
• Momentum-Space Josephson Effects
• Suppression of 1/f noise in one-qubit systems
• Decoherence of spin qubits due to a nearby charge fluctuator in gate-defined double dots
• Characterization of coherent impurity effects in solid state qubits
• Phase-Coherent Dynamics of a Superconducting Flux Qubit with Capacitive-Bias Readout
• Microscopic origin of critical current fluctuations in large, small and ultra-small area Josephson junctions
• Saturation of Two Level Systems and Charge Noise in Josephson Junction Qubits
• Low frequency resistance and critical current fluctuations in Al-based Josephson junctions
• A Josephson Junction Microscope for Low-frequency Fluctuators
• Positive- and negative-frequency noise from an ensemble of two-level fluctuators
• Non-equilibrium probing of two-level charge fluctuators using the step response of a single electron transistor
• Decoherence of charge qubit coupled to interacting background charges
• Thermal properties of charge noise sources
• Suspending Effect on Low-Frequency Charge Noise in Graphene Quantum Dot
• Second-order decoherence mechanisms of a transmon qubit probed with thermal microwave states
• Reduction of low-frequency 1/f noise in Al-AlOx-Al tunnel junctions by thermal annealing
• Observation of Momentum Space Josephson Effects
• Dephasing and dissipation in qubit thermodynamics
• Set of Holonomic and Protected Gates on Topological Qubits for Realistic Quantum Computer
• Time-optimal performance of Josephson charge qubits: A process tomography approach
• Correcting low-frequency noise with continuous measurement
• Noise and microresonance of critical current in Josephson junction induced by Kondo trap states
• Hardware implementation of quantum stabilizers in superconducting circuits
• Exact decoherence dynamics of $1/f$ noise
• Realistic quantum manipulation of two-level system fluctuators
• 1/f noise in quantum nanoscience
• Spin dephasing due to a random Berry phase
• A Nonlinear Charge- and Flux-Tunable Cavity Derived from an Embedded Cooper Pair Transistor
• Fano-Kondo effect in a two-level system with triple quantum dots: shot noise characteristics
• Protecting Superconducting Qubits with Universal Quantum Degeneracy Point
• Universal Quantum Degeneracy Point for Superconducting Qubits
• Quantum coherence dynamics of displaced squeezed thermal state in a Non-Markovian environment
• Effects of quasiparticle tunneling in a circuit-QED realization of a strongly driven two-level system
• Charge sensitivity of a cavity-embedded Cooper pair transistor limited by single-photon shot noise
• Open quantum systems in thermal non-ergodic environments
• A Controllable Interaction between Two-Level Systems inside a Josephson Junction
• Insensitivity of Ion Motional Heating Rate to Trap Material over a Large Temperature Range
• Resonant effects in a SQUID qubit subjected to non adiabatic changes
• Environment engineering to protect quantum coherence in tripartite systems under dephasing noise