Spectroscopy of a Qubit Array via a Single Transmission Line

Abstract

Frequency-selective readout for superconducting qubits opens the way towards scaling qubit circuits up without increasing the number of measurement lines. Here we demonstrate the readout of an array of 7 flux qubits located on the same chip. Each qubit is placed near an individual lambda/4 resonator which, in turn, is coupled to a common microwave transmission line. We performed spectroscopy of all qubits and determined their parameters in a single measurement run.

3 pages, 3 figures

References in corpus (5)

• Coupling Superconducting Qubits via a Cavity Bus
• Preparation and Measurement of Three-Qubit Entanglement in a Superconducting Circuit
• NIKA: A millimeter-wave kinetic inductance camera
• Direct Josephson coupling between superconducting flux qubits
• Measurement of the ground-state flux diagram of three coupled qubits as a first step towards the demonstration of adiabatic quantum computation

Cited by in corpus (17)

• Implementation of a Quantum Metamaterial
• Frequency Division Multiplexing Readout and Simultaneous Manipulation of an Array of Flux Qubits
• Multiplexed dispersive readout of superconducting phase qubits
• Detection of weak microwave fields with an underdamped Josephson junction
• Flux qubits in a planar circuit quantum electrodynamics architecture: quantum control and decoherence
• Fabrication and measurements of hybrid Nb/Al Josephson junctions and flux qubits with pi-shifters
• Non-Hermitian Hamiltonian approach to the microwave transmission through one- dimensional qubit chain
• Dynamics of parametric fluctuations induced by quasiparticle tunneling in superconducting flux qubits
• Generation of non-classical photon states in superconducting quantum metamaterials
• Quantum metamaterial without local control
• Collective quantum coherent oscillations in a globally coupled array of qubits
• Anti-crosstalk high-fidelity state discrimination for superconducting qubits
• Sensor-assisted fault mitigation in quantum computation
• A frequency and sensitivity tunable microresonator array for high-speed quantum processor readout
• Double resonance response of a superconducting quantum metamaterial: manifestation of non-classical states of photons
• Broadband Sample Holder for Microwave Spectroscopy of Superconducting Qubits
• Theory of the Simultaneous Transient Dispersive Readout of Multiple Spin Qubits