-
Article
Open AccessCoherent control of electron spin qubits in silicon using a global field
Silicon spin qubits promise to leverage the extraordinary progress in silicon nanoelectronic device fabrication over the past half century to deliver large-scale quantum processors. Despite the scalability adv...
-
Article
Scaling silicon-based quantum computing using CMOS technology
As quantum processors grow in complexity, attention is moving to the scaling prospects of the entire quantum computing system, including the classical support hardware. Recent results in high-fidelity control ...
-
Article
Open AccessCoherent spin qubit transport in silicon
A fault-tolerant quantum processor may be configured using stationary qubits interacting only with their nearest neighbours, but at the cost of significant overheads in physical qubits per logical qubit. Such ...
-
Article
Operation of a silicon quantum processor unit cell above one kelvin
Quantum computers are expected to outperform conventional computers in several important applications, from molecular simulation to search algorithms, once they can be scaled up to large numbers—typically mill...
-
Article
Open AccessCoherent spin control of s-, p-, d- and f-electrons in a silicon quantum dot
Once the periodic properties of elements were unveiled, chemical behaviour could be understood in terms of the valence of atoms. Ideally, this rationale would extend to quantum dots, and quantum computation co...
-
Article
Open AccessSingle-spin qubits in isotopically enriched silicon at low magnetic field
Single-electron spin qubits employ magnetic fields on the order of 1 Tesla or above to enable quantum state readout via spin-dependent-tunnelling. This requires demanding microwave engineering for coherent spi...
-
Article
Fidelity benchmarks for two-qubit gates in silicon
Universal quantum computation will require qubit technology based on a scalable platform1, together with quantum error correction protocols that place strict limits on the maximum infidelities for one- and two-qu...
-
Article
Silicon qubit fidelities approaching incoherent noise limits via pulse engineering
Spin qubits created from gate-defined silicon metal–oxide–semiconductor quantum dots are a promising architecture for quantum computation. The high single qubit fidelities possible in these systems, combined w...
-
Article
Open AccessIntegrated silicon qubit platform with single-spin addressability, exchange control and single-shot singlet-triplet readout
Silicon quantum dot spin qubits provide a promising platform for large-scale quantum computation because of their compatibility with conventional CMOS manufacturing and the long coherence times accessible using 2...
-
Article
Open AccessSpin and orbital structure of the first six holes in a silicon metal-oxide-semiconductor quantum dot
Valence band holes confined in silicon quantum dots are attracting significant attention for use as spin qubits. However, experimental studies of single-hole spins have been hindered by challenges in fabricati...
-
Article
Open AccessSilicon CMOS architecture for a spin-based quantum computer
Recent advances in quantum error correction codes for fault-tolerant quantum computing and physical realizations of high-fidelity qubits in multiple platforms give promise for the construction of a quantum com...
-
Article
Open AccessInterfacing spin qubits in quantum dots and donors—hot, dense, and coherent
Semiconductor spins are one of the few qubit realizations that remain a serious candidate for the implementation of large-scale quantum circuits. Excellent scalability is often argued for spin qubits defined b...
-
Article
A two-qubit logic gate in silicon
A high-fidelity two-qubit CNOT logic gate is presented, which is realized by combining single- and two-qubit operations with controlled phase operations in a quantum dot system using the exchange interaction.
-
Article
An addressable quantum dot qubit with fault-tolerant control-fidelity
A quantum bit that can be addressed with a gate voltage and has a very high control-fidelity can be realized in an electrically defined silicon quantum dot.
-
Article
Spin-valley lifetimes in a silicon quantum dot with tunable valley splitting
Although silicon is a promising material for quantum computation, the degeneracy of the conduction band minima (valleys) must be lifted with a splitting sufficient to ensure the formation of well-defined and l...
-
Article
Open AccessPauli Spin Blockade in a Highly Tunable Silicon Double Quantum Dot
Double quantum dots are convenient solid-state platforms to encode quantum information. Two-electron spin states can be detected and manipulated using quantum selection rules based on the Pauli exclusion princ...
-
Chapter
Conductance in Quantum Boxes: Interference and Single Electron Effects
Ballistic electron transport in the two-dimensional electron gas (2DEG) formed at a GaAs/AlxGai_xAs heterojunction has been studied in depth both experimentally and theoretically in recent years, and remains an a...
