Hybrid Exchange Measurement-Based Qubit Operations in Semiconductor Double Quantum Dot Qubits
arXiv:2105.12860 · doi:10.1103/PhysRevApplied.16.064019
Abstract
Measurement-based quantum computing (MBQC) promises natural compatibility with quantum error correcting codes at the cost of a polynomial increase in physical qubits. MBQC proposals have largely focused on photonic systems, where 2-qubit gates are difficult. Semiconductor spin qubits in quantum dots, on the other hand, offer fast 2-qubit gates via the exchange interaction. In exchange-based quantum computing, as with other solid-state qubits, leakage to higher states is a serious problem that must be mitigated. Here, two hybrid measurement-exchange schemes are proposed which quantify the benefits of MBQC on quantum dot-based quantum computing. Measurement of double quantum dot encoded qubits in the singlet-triplet basis, along with inter- and intra-qubit exchange interaction, are used to perform one and two qubit operations. Both schemes suppress individual qubit spin-state leakage errors, offer fast gate times, and require only controllable exchange couplings, up to known phase and Pauli corrections.
References in corpus (55)
- Quantum Computing in the NISQ era and beyond
- Supplementary information for "Quantum supremacy using a programmable superconducting processor"
- Spins in few-electron quantum dots
- Logic gates at the surface code threshold: Superconducting qubits poised for fault-tolerant quantum computing
- Silicon Quantum Electronics
- Observation of a Many-Body Dynamical Phase Transition with a 53-Qubit Quantum Simulator
- A >99.9%-fidelity quantum-dot spin qubit with coherence limited by charge noise
- Fault-tolerant quantum computation with high threshold in two dimensions
- High-fidelity quantum logic gates using trapped-ion hyperfine qubits
- High-fidelity two-qubit quantum logic gates using trapped calcium-43 ions
- Scalable Designs for Quasiparticle-Poisoning-Protected Topological Quantum Computation with Majorana Zero Modes
- Quantum CNOT Gate for Spins in Silicon
- Triplet-Singlet Spin Relaxation via Nuclei in a Double Quantum Dot
- A Coherent Spin-Photon Interface in Silicon
- Universal quantum control of two-electron spin quantum bits using dynamic nuclear polarization
- Universal quantum computation with spin-1/2 pairs and Heisenberg exchange
- A fault-tolerant one-way quantum computer
- Silicon CMOS architecture for a spin-based quantum computer
- Valence Bond Solids for Quantum Computation
- Reduced sensitivity to charge noise in semiconductor spin qubits via symmetric operation
- Coherent spin manipulation in an exchange-only qubit
- Universal resources for measurement-based quantum computation
- Universal quantum computation using only projective measurement, quantum memory, and preparation of the 0 state
- Silicon qubit fidelities approaching incoherent noise limits via pulse engineering
- An introduction to measurement based quantum computation
- Experimental demonstration of a graph state quantum error-correction code
- Measurement-based quantum computation with trapped ions
- High-fidelity quantum gates in Si/SiGe double quantum dots
- Topological quantum buses: coherent quantum information transfer between topological and conventional qubits
- Prospects for measurement-based quantum computing with solid state spins
- Three-electron spin qubits
- Integrated silicon qubit platform with single-spin addressability, exchange control and robust single-shot singlet-triplet readout
- Graph States as a Resource for Quantum Metrology
- The one-way quantum computer -- a non-network model of quantum computation
- Scalable Generation of Graph-State Entanglement through Realistic Linear Optics
- Quantifying error and leakage in an encoded Si/SiGe triple-dot qubit
- Resonantly driven singlet-triplet spin qubit in silicon
- Adequacy of Si:P Chains as Fermi-Hubbard Simulators
- Spin-orbit Interactions for Singlet-Triplet Qubits in Silicon
- Quantum computing via measurements only
- Site-selective quantum control in an isotopically enriched 28Si/SiGe quadruple quantum dot
- Electron g-factor of valley states in realistic silicon quantum dots
- Exchange-based two-qubit gate for singlet-triplet qubits
- Controllable exchange coupling between two singlet-triplet qubits
- A leakage-resilient approach to fault-tolerant quantum computing with superconducting elements
- Photonic graph state generation from quantum dots and color centers for quantum communications
- Dynamically corrected gates for an exchange-only qubit
- Quantum-limited measurement of spin qubits via curvature coupling to a cavity
- Robust Two-Qubit Gates for Exchange-Coupled Qubits
- Fault-Tolerant Quantum Computation for Singlet-Triplet Qubits with Leakage Errors
- Majorana Qubit Readout Using Longitudinal Qubit-Resonator Interaction
- Protecting Quantum Information in Quantum Dot Spin Chains by Driving Exchange Interactions Periodically
- Random circuits by measurements on weighted graph states
- Symmetry Protected Quantum Computation
- Measurement based Controlled Not gate for topological qubits in a Majorana fermion quantum-dot hybrid system