US 11,816,062 B2
Control unit for qubits
Thomas Morf, Gross (CH); Cezar Bogdan Zota, Rueschlikon (CH); Peter Mueller, Zurich (CH); Pier Andrea Francese, Adliswil (CH); Marcel A. Kossel, Reichenburg (CH); Matthias Braendli, Otelfingen (CH); and Mridula Prathapan, Zurich (CH)
Assigned to International Business Machines Corporation, Armonk, NY (US)
Filed by INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US)
Filed on Nov. 4, 2021, as Appl. No. 17/453,499.
Prior Publication US 2023/0139805 A1, May 4, 2023
Int. Cl. G06F 15/82 (2006.01); G06N 10/40 (2022.01)
CPC G06F 15/82 (2013.01) [G06N 10/40 (2022.01)] 24 Claims
OG exemplary drawing
 
1. A control unit for controlling a data transfer between a classical processor and a quantum processor with a plurality of qubits,
the control unit comprising a plurality of control and read-out circuits configured for controlling and reading out the plurality of qubits, each of the control and read-out circuits of the plurality of control and read-out circuits being assigned to one or more of the qubits of the plurality of qubits,
the control unit being configured for:
receiving instructions from the classical processor,
controlling the quantum processor in order to execute the instructions,
the controlling of the quantum processor comprising selectively powering on a subset of control and read-out circuits of the plurality of control and read-out circuits during an instruction cycle, while ensuring that a remaining control and read-out circuits of the plurality of control and read-out circuits are powered off during the instruction cycle, the subset of control and read-out circuits comprising less control and read-out circuits than the plurality of control and read-out circuits,
using the powered-on subset of control and read-out circuits to control a subset of qubits of the plurality of qubits and to read out data from the subset of qubits, the subset of qubits comprising those qubits of the plurality of qubits to which the control and read-out circuits of the powered-on subset of control and read-out circuits are assigned,
transmitting the read out data from the qubits to the classical processor.