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

Journal Article · · Nature Nanotechnology
An intuitive realization of a qubit is an electron charge at two well-defined positions of a double quantum dot. The qubit is simple and has the potential for high-speed operation because of its strong coupling to electric fields. But, charge noise also couples strongly to this qubit, resulting in rapid dephasing at all but one special operating point called the ‘sweet spot’. In previous studies d.c. voltage pulses have been used to manipulate semiconductor charge qubits but did not achieve high-fidelity control, because d.c. gating requires excursions away from the sweet spot. Here, by using resonant a.c. microwave driving we achieve fast (greater than gigahertz) and universal single qubit rotations of a semiconductor charge qubit. The Z-axis rotations of the qubit are well protected at the sweet spot, and we demonstrate the same protection for rotations about arbitrary axes in the X–Y plane of the qubit Bloch sphere. We characterize the qubit operation using two tomographic approaches: standard process tomography and gate set tomography. Moreover, both methods consistently yield process fidelities greater than 86% with respect to a universal set of unitary single-qubit operations.
Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1182978
Report Number(s):
SAND--2014-15683J; 533644
Journal Information:
Nature Nanotechnology, Journal Name: Nature Nanotechnology Journal Issue: 3 Vol. 10; ISSN 1748-3387
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

References (42)

Coherent control of a single electron spin with electric fields text January 2007
Quantum Coherence in a One-Electron Semiconductor Charge Qubit text January 2010
Coherent control of macroscopic quantum states in a single-Cooper-pair box text January 1999
The Physical Implementation of Quantum Computation journal September 2000
Coherent control of macroscopic quantum states in a single-Cooper-pair box journal April 1999
Driven coherent oscillations of a single electron spin in a quantum dot journal August 2006
Implementation of a Toffoli gate with superconducting circuits journal December 2011
A single-atom electron spin qubit in silicon journal September 2012
Circuit quantum electrodynamics with a spin qubit journal October 2012
Quantum control and process tomography of a semiconductor quantum dot hybrid qubit journal July 2014
Ultrafast universal quantum control of a quantum-dot charge qubit using Landau–Zener–Stückelberg interference journal January 2013
Fast coherent manipulation of three-electron states in a double quantum dot journal January 2014
Electrical control of a long-lived spin qubit in a Si/SiGe quantum dot journal August 2014
Optimized driving of superconducting artificial atoms for improved single-qubit gates journal October 2010
Gate fidelity fluctuations and quantum process invariants journal July 2011
Nonadiabatic quantum control of a semiconductor charge qubit journal October 2011
Coherent quantum oscillations and echo measurements of a Si charge qubit journal August 2013
Spin Echo of a Single Electron Spin in a Quantum Dot journal June 2008
Randomized Benchmarking and Process Tomography for Gate Errors in a Solid-State Qubit journal March 2009
Correlated Coherent Oscillations in Coupled Semiconductor Charge Qubits journal July 2009
Quantum Coherence in a One-Electron Semiconductor Charge Qubit journal December 2010
Tunable Spin Loading and T 1 of a Silicon Spin Qubit Measured by Single-Shot Readout journal April 2011
Fast Spin-Orbit Qubit in an Indium Antimonide Nanowire journal February 2013
Charge Noise Spectroscopy Using Coherent Exchange Oscillations in a Singlet-Triplet Qubit journal April 2013
Quantum-Dot-Based Resonant Exchange Qubit journal July 2013
Coherent Manipulation of Electronic States in a Double Quantum Dot journal November 2003
Charge-Qubit Operation of an Isolated Double Quantum Dot journal August 2005
NMR techniques for quantum control and computation journal January 2005
Manipulating the Quantum State of an Electrical Circuit journal May 2002
Coherent Control of a Single Electron Spin with Electric Fields journal November 2007
Spin-echo of a single electron spin in a quantum dot text January 2007
Correlated coherent oscillations in coupled semiconductor charge qubits preprint January 2009
Gate fidelity fluctuations and quantum process invariants text January 2009
Implementation of a Toffoli Gate with Superconducting Circuits text January 2011
Fast spin-orbit qubit in an indium antimonide nanowire text January 2012
A single-atom electron spin qubit in silicon text January 2013
Fast coherent manipulation of three-electron states in a double quantum dot text January 2013
Quantum control and process tomography of a semiconductor quantum dot hybrid qubit text January 2014
Manipulating the Quantum State of an Electrical Circuit text January 2002
Coherent manipulation of electronic states in a double quantum dot text January 2003
Driven coherent oscillations of a single electron spin in a quantum dot text January 2006
NMR Techniques for Quantum Control and Computation text January 2004

Cited By (45)

Demonstration of qubit operations below a rigorous fault tolerance threshold with gate set tomography journal February 2017
Conditional rotation of two strongly coupled semiconductor charge qubits journal July 2015
Silicon quantum processor with robust long-distance qubit couplings journal September 2017
Temperature dependence of long coherence times of oxide charge qubits preprint January 2016
Suppression of Leakage for a Charge Qubit in Triangular Triple Quantum Dots journal October 2019
A decoherence-free subspace in a charge quadrupole qubit journal June 2017
High-fidelity resonant gating of a silicon-based quantum dot hybrid qubit journal October 2015
State-conditional coherent charge qubit oscillations in a Si/SiGe quadruple quantum dot journal October 2016
Extending the coherence of a quantum dot hybrid qubit journal August 2017
Spin decoherence in a two-qubit CPHASE gate: the critical role of tunneling noise journal November 2018
Achieving high-fidelity single-qubit gates in a strongly driven charge qubit with 1/f charge noise journal January 2019
Adiabatic two-qubit gates in capacitively coupled quantum dot hybrid qubits journal September 2019
Picosecond coherent electron motion in a silicon single-electron source journal November 2019
Superconductor–semiconductor hybrid-circuit quantum electrodynamics journal January 2020
Fast raster scan multiplexed charge stability measurements toward high-throughput quantum dot array calibration journal June 2019
Semiconductor quantum computation journal December 2018
High-fidelity single-qubit gates in a strongly driven quantum-dot hybrid qubit with 1 / f charge noise journal August 2019
High-fidelity entangling gates for quantum-dot hybrid qubits based on exchange interactions journal January 2020
Achieving high-fidelity single-qubit gates in a strongly driven silicon-quantum-dot hybrid qubit journal June 2017
Measurements of Capacitive Coupling Within a Quadruple-Quantum-Dot Array journal December 2019
Electric-field control and noise protection of the flopping-mode spin qubit journal September 2019
Long distance coupling of resonant exchange qubits journal November 2015
Breaking the rotating wave approximation for a strongly driven dressed single-electron spin journal October 2016
Quantum and tunneling capacitance in charge and spin qubits journal January 2017
Pulse sequences for suppressing leakage in single-qubit gate operations journal June 2017
Charge reconfiguration in arrays of quantum dots journal December 2017
Tunable Hybrid Qubit in a GaAs Double Quantum Dot journal February 2016
Operating Quantum States in Single Magnetic Molecules: Implementation of Grover’s Quantum Algorithm journal November 2017
Flopping-mode electric dipole spin resonance journal January 2020
Oxides: An answer to the qubit problem? journal June 2019
Charge reconfiguration in arrays of quantum dots other January 2017
High fidelity resonant gating of a silicon based quantum dot hybrid qubit text January 2015
Silicon quantum processor with robust long-distance qubit couplings text January 2015
Tunable Hybrid Qubit in a GaAs Double Quantum Dot text January 2015
Quantum and Tunnelling Capacitance in Charge and Spin Qubits text January 2016
Demonstration of qubit operations below a rigorous fault tolerance threshold with gate set tomography text January 2016
Breaking the rotating wave approximation for a strongly-driven, dressed, single electron spin text January 2016
Pulse sequences for suppressing leakage in single-qubit gate operations text January 2016
Achieving High Fidelity Single Qubit Gates in a Strongly Driven Silicon Quantum Dot Hybrid Qubit text January 2017
Achieving High-Fidelity Single-Qubit Gates in a Strongly Driven Charge Qubit with $1\!/\!f$ Charge Noise text January 2018
Picosecond coherent electron motion in a silicon single-electron source text January 2019
Electric-field control and noise protection of the flopping-mode spin qubit text January 2019
Flopping-mode electric dipole spin resonance text January 2019
Superconductor-semiconductor hybrid cavity quantum electrodynamics text January 2019
High-Fidelity Entangling Gates for Quantum-Dot Hybrid Qubits Based on Exchange Interactions text January 2019

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