Option #2: Charge Noise Spectroscopy in Silicon Qubits
Abstract
The objective of this proposal is to measure charge noise in silicon qubits. Confined spins in semiconductors are a leading platform for quantum information processing. A key challenge for implementing a large-scale spin-based quantum computer is high-fidelity entanglement between spin qubits. Because magnetic interactions between spins are weak, most two-qubit operations between spins rely on the charge of the electron and electric-field induced changes to the qubit Hamiltonian. Charge noise in the host semiconductor dephases spin qubits and is therefore a key barrier to quantum computing in silicon. This proposal will (1) develop new techniques for charge noise spectroscopy and (2) systematically measure charge noise in silicon qubits, Techniques to be explored include nanoscale quantum transport, as well as relaxation and dephasing measurements of spin qubits. The results of this research will enable the spin qubit community to make a breakthrough in selecting the materials, device designs, and control schemes to maximize qubit coherence and build a fault-tolerant spin-based quantum computer.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Sep 11, 2018
- Source ID
- W911NF1710260
Entities
People
- John M Nichol
Organizations
- Army Contracting Command
- National Security Agency
- University of Rochester