Anyon Systems Inc.

Gabriel Ethier-Majcher

Alireza Najafi-Yazdi

Chloé Archambault

Claudéric Ouellet-Plamondon

There is described a method for performing a two-qubit gate. The method comprises coupling a first qubit to a second qubit, and coupling a third qubit to the first qubit and to the second qubit, wherein the third qubit is a coupler. A drive signal is applied to the coupler to perform the two-qubit gate on the first qubit and the second qubit by driving the coupler, the drive signal creating coupling between eigenstates of a Hamiltonian of the coupler.

Methods and circuits for performing two-qubit quantum gates

There is described herein a topologically protected quantum circuit with superconducting qubits and method of operation thereof. The circuit comprises a plurality of physical superconducting qubits and a plurality of coupling devices interleaved between pairs of the physical superconducting qubits. The coupling devices comprise at least one &#x3c6;-Josephson junction, wherein a Josephson phase &#x3c6;of the &#x3c6;-Josephson junction is non-zero in a ground state, the coupling devices have a Josephson energy E, the physical superconducting qubits have a Josephson energy E, and the circuit operates in a topological regime when

Topologically protected quantum circuit with superconducting qubits

There is described a microwave device and methods of operating same. The device comprises at least one superconducting qubit coupled to a transmission line defining a first port, and a filter. The filter comprises a first resonant element having a first resonance frequency f, positioned along the transmission line between the first port and the qubit, and a second resonant element having a second resonance frequency fdifferent from fand positioned along the transmission line between the first resonant element and the qubit.

Microwave device and method of operation

A qubit circuit and a method for topological protection of a qubit circuit are described. The circuit comprises a plurality of physical superconducting qubits and a plurality of coupling devices interleaved between pairs of the physical superconducting qubits. The coupling devices are tunable to operate the qubit circuit either in a topological regime or as a series of individual physical qubits. At least two superconducting loops, each one threadable by an external flux, are part of the qubit circuit.

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Montreal, Canada

Gabriel Ethier-Majcher