Technologies Available for License

2018-016: Chiral Qubits

Invention: 2018-006

Patent Status: U.S. Patent Number 10,657,456 was issued on May 19, 2020

For technical and licensing related questions, email tcp@bnl.gov.

Summary

Quantum computer uses entanglement and superposition to perform computation. Currently both analog and digital approaches are used to implement a quantum computer: analog and digital. Both analog and digital approaches use quantum bits, referred to as qubits, which represent the basic units of quantum information. Quantum computing based on superconducting qubits has made substantial progress. However, the reliance on superconductivity imposes severe constraints on quantum processors due to the need to cool the qubits to very low temperatures. Here we describe the use of Dirac or Weyl semimetals such as zirconium pentatelluride to make a qubit. This qubit is a micrometer loop where the electric current of the chiral fermions under the limit of fast switching (THz) will be persistent and operate similarly to the super conducting flux qubit. This qubit will work at room temperature unlike the super conducting flux qubit.

Description

Describes a device for quantum computing with number of qubits with some of the qubits containing Diral or Weyl semimetals such as zirconium pentatelluride and tantalum arsenide that have at least two stable quantum states. The qubits are coupled to a circularly polarized radiation source whose frequency and intensity is configured to excite a chiral current in at least the subset of qubits. The qubits are coupled to at least one terahertz cavity so that the quantum states of the qubits can be determined.

Journal Publication & Intellectual Property

• US 10,657,456 B1 (.pdf)