Microwave-driven coherent operations of a semiconductor quantum dot charge qubit

Abstract

A most intuitive realization of a qubit is a single electron charge sitting at two well-defined positions, such as the left and right sides of a double quantum dot. This qubit is not just simple but also has the potential for high-speed operation, because of the strong coupling of electric fields to the electron. However, charge noise also couples strongly to this qubit, resulting in rapid dephasing at nearly all operating points, with the exception of one special 'sweet spot'. Fast dc voltage pulses have been used to manipulate semiconductor charge qubits, but these previous experiments did not achieve high-fidelity control, because dc gating requires excursions away from the sweet spot. Here, by using resonant ac microwave driving, we achieve coherent manipulation of a semiconductor charge qubit, demonstrating a Rabi frequency of up to 2GHz, a value approaching the intrinsic qubit frequency of 4.5GHz. Z-axis rotations of the qubit are well-protected at the sweet spot, and by using ac gating, we demonstrate the same protection for rotations about arbitrary axes in the X-Y plane of the qubit Bloch sphere. We characterize operations on the qubit using two independent tomographic approaches: standard process tomography and a newly developed method known as gate set tomography. Both approaches show that this qubit can be operated with process fidelities greater than 86% with respect to a universal set of unitary single-qubit operations.

arXiv comment9 pages, 5 figures including supplementary information

References in corpus (27)

• Coherent control of macroscopic quantum states in a single-Cooper-pair box
• The Physical Implementation of Quantum Computation
• Manipulating the Quantum State of an Electrical Circuit
• Driven coherent oscillations of a single electron spin in a quantum dot
• NMR Techniques for Quantum Control and Computation
• Coherent control of a single electron spin with electric fields
• A single-atom electron spin qubit in silicon
• Coherent manipulation of electronic states in a double quantum dot
• Electrical control of a long-lived spin qubit in a Si/SiGe quantum dot
• Circuit Quantum Electrodynamics with a Spin Qubit
• Charge-qubit operation of an isolated double quantum dot
• Implementation of a Toffoli Gate with Superconducting Circuits
• Quantum Coherence in a One-Electron Semiconductor Charge Qubit
• Electrometry Using Coherent Exchange Oscillations in a Singlet-Triplet-Qubit
• Self-Consistent Quantum Process Tomography
• Quantum control and process tomography of a semiconductor quantum dot hybrid qubit
• Randomized benchmarking and process tomography for gate errors in a solid-state qubit
• The Resonant Exchange Qubit
• Implementing optimal control pulse shaping for improved single-qubit gates
• Spin-echo of a single electron spin in a quantum dot
• Fast spin-orbit qubit in an indium antimonide nanowire
• Tunable spin-selective loading of a silicon spin qubit
• Coherent Quantum Oscillations in a Silicon Charge Qubit
• Fast coherent manipulation of three-electron states in a double quantum dot
• Robust, self-consistent, closed-form tomography of quantum logic gates on a trapped ion qubit
• Nonadiabatic quantum control of a semiconductor charge qubit
• Gate fidelity fluctuations and quantum process invariants

Cited by in corpus (100)

• Demonstration of qubit operations below a rigorous fault tolerance threshold with gate set tomography
• Operating Quantum States in Single Magnetic Molecules: Implementation of Grover's Quantum Algorithm
• Semiconductor Qubits In Practice
• Gate Set Tomography
• Superconductor-semiconductor hybrid cavity quantum electrodynamics
• Semiconductor Quantum Computation
• Review of performance metrics of spin qubits in gated semiconducting nanostructures
• Silicon quantum processor with robust long-distance qubit couplings
• Noisy intermediate-scale quantum computers
• Input-output theory for spin-photon coupling in Si double quantum dots
• High fidelity resonant gating of a silicon based quantum dot hybrid qubit
• Extending the coherence of a quantum dot hybrid qubit
• Tunable Hybrid Qubit in a GaAs Double Quantum Dot
• Quantum and Tunnelling Capacitance in Charge and Spin Qubits
• All-Microwave Control and Dispersive Readout of Gate-Defined Quantum Dot Qubits in Circuit Quantum Electrodynamics
• Probing quantum processor performance with pyGSTi
• Optimization of a solid-state electron spin qubit using Gate Set Tomography
• Colloquium: Advances in automation of quantum dot devices control
• Coherent phonon dynamics in spatially separated graphene mechanical resonators
• Electric-field control and noise protection of the flopping-mode spin qubit
• Achieving High-Fidelity Single-Qubit Gates in a Strongly Driven Charge Qubit with $1/f$ Charge Noise
• A decoherence-free subspace in a charge quadrupole qubit
• State-conditional coherent charge qubit oscillations in a Si/SiGe quadruple quantum dot
• Lindblad Tomography of a Superconducting Quantum Processor
• Flopping-mode electric dipole spin resonance
• A taxonomy of small Markovian errors
• Gate-Controlled Quantum Dots Based on Two-Dimensional Materials
• Breaking the rotating wave approximation for a strongly-driven, dressed, single electron spin
• Picosecond coherent electron motion in a silicon single-electron source
• A low-noise on-chip coherent microwave source
• Long distance coupling of resonant exchange qubits
• Hybrid superconductor-semiconductor systems for quantum technology
• Achieving High Fidelity Single Qubit Gates in a Strongly Driven Silicon Quantum Dot Hybrid Qubit
• Correlated spectrum of distant semiconductor qubits coupled by microwave photons
• Measurements of capacitive coupling within a quadruple quantum dot array
• Microwave spectroscopy of a carbon nanotube charge qubit
• Controlled Quantum Operations of a Semiconductor Three-Qubit System
• Adiabatic two-qubit gates in capacitively coupled quantum dot hybrid qubits
• High-fidelity single-qubit gates in a strongly driven quantum dot hybrid qubit with $1/f$ charge noise
• Pulse sequences for suppressing leakage in single-qubit gate operations
• Spin decoherence in a two-qubit CPHASE gate: the critical role of tunneling noise
• Signatures of atomic-scale structure in the energy dispersion and coherence of a Si quantum-dot qubit
• Robust electric dipole transition at microwave frequencies for nuclear spin qubits in silicon
• CMOS Quantum Computing: Toward A Quantum Computer System-on-Chip
• Pauli semigroups and unistochastic quantum channels
• A tunable hybrid qubit in a triple quantum dot
• High-Fidelity Entangling Gates for Quantum-Dot Hybrid Qubits Based on Exchange Interactions
• Long-Range Interaction between Charge and Spin Qubits in Quantum Dots
• High Fidelity Singlet-Triplet $S$-$T_{-}$ Qubits in Inhomogeneous Magnetic Fields
• High fidelity ac gate operations of the quantum dot hybrid qubit
• Gauge invariant information concerning quantum channels
• Phonon-assisted relaxation and decoherence of singlet-triplet qubits in Si/SiGe quantum dots
• Coherent Charge Oscillations in a Bilayer Graphene Double Quantum Dot
• Benchmarking quantum gates and circuits
• Conditions for Equivalent Noise Sensitivity of Geometric and Dynamical Quantum Gates
• Optimal control of hybrid qubits: implementing the quantum permutation algorithm
• Characterization of a gate-defined double quantum dot in a Si/SiGe nanomembrane
• Suppression of leakage for a charge quadrupole qubit in triangular geometry
• Low-temperature environments for quantum computation and quantum simulation
• Unifying Floquet theory of longitudinal and dispersive readout
• High-Order Qubit Dephasing at Sweet Spots by Non-Gaussian Fluctuators: Symmetry Breaking and Floquet Protection
• Switching spin filling sequence in a bilayer graphene quantum dot through trigonal warping
• Coupling two charge qubits via a superconducting resonator operating in the resonant and dispersive regimes
• Randomized linear gate set tomography
• Implementation of geometric quantum gates on microwave-driven semiconductor charge qubits
• Manipulating quantum coherence of charge states in interacting double-dot Aharonov-Bohm interferometers
• Learning a quantum channel from its steady-state
• Phonon-induced decoherence of a charge quadrupole qubit
• Flip-chip-based fast inductive parity readout of a planar superconducting island
• Dynamics of van der Waals Charge Qubit in 2D Bilayers: Ab initio Quantum Transport and Qubit Measurement
• Charge noise suppression in capacitively coupled singlet-triplet spin qubits under magnetic field
• Tunable charge qubit based on barrier-controlled triple quantum dots
• Swap Test with Quantum-Dot Charge Qubits
• Compressed Optimization of Device Architectures (CODA) for semiconductor quantum devices
• Quantum dynamics for energetic advantage in a charge-based classical full-adder
• Dynamical second-order noise sweetspots in resonantly driven spin qubits
• Long-range two-hybrid-qubit gates mediated by a microwave cavity with red sidebands
• Microscopic theory on magnetic-field-tuned sweet spot of exchange interactions in multielectron quantum-dot systems
• Effect of interactions on quantum-limited detectors
• Latched readout for the quantum dot hybrid qubit
• Fermionic quantum computation with Cooper pair splitters
• Quantum measurement induces a many-body transition
• Simulating spin systems with Majorana networks
• Location qubits in a multi-quantum-dot system
• Unifying non-Markovian characterisation with an efficient and self-consistent framework
• Theory of interaction-dependent instability in quantum detection by means of Luttinger liquid tunnel junction: a rigorous theorem
• True decoherence-free-subspace derived from a semiconductor double quantum dot Heisenberg spin-trimer
• Universal singlet-triplet qubits implemented near the transverse sweet spot
• Entangling spin and charge degrees of freedom in semiconductor quantum dots
• Self-equilibration theorem in quantum-point contacts of interacting electrons: time-dependent quantum fluctuations of tunnel transport beyond the Levitov-Lesovik scattering approach
• Proposed Five-Electron Charge Quadrupole Qubit
• Fast raster scan multiplexed charge stability measurements toward high-throughput quantum dot array calibration
• Controlled-Not Quantum Logic Gate in Two Strongly Coupled Semiconductor Charge Qubits
• Synchronized coherent charge oscillations in coupled double quantum dots
• Quantum entanglement response to pulsed gate modulation
• Quantum Algorithms in Cybernetics
• Extending Qubit Coherence Time via Hybrid Dynamical Decoupling
• Tunneling maps of interacting electrons in real time: anomalous tunneling in quantum point-contacts beyond the steady state regime
• Spin-photon Qubits for Scalable Quantum Network
• Fermionic Averaged Circuit Eigenvalue Sampling