Abstract
We experimentally assess the suitability of transmon qubits with fixed frequencies and fixed interactions for the realization of analogue quantum simulations of spin systems. We test a set of necessary criteria for this goal on a commercial quantum processor using full quantum process tomography and more efficient Hamiltonian tomography. Significant single qubit errors at low amplitudes are identified as a limiting factor preventing the realization of analogue simulations on currently available devices. We additionally find spurious dynamics in the absence of drive pulses, which we identify with coherent coupling between the qubit and a low dimensional environment. With moderate improvements, analogue simulation of a rich family of time-dependent many-body spin Hamiltonians may be possible.
Original language | English |
---|---|
Journal | Quantum |
Volume | 8 |
ISSN | 2521-327X |
DOIs | |
Publication status | Published - 2024 |
Bibliographical note
Funding Information:We are grateful to Johannes Knolle, Kiran Khosla and Francesco Petiziol for providing stimulating discussions. This work is supported by Samsung GRP grant, the UK Hub in Quantum Computing and Simulation, part of the UK National Quantum Technologies Programme with funding from UKRI EP-SRC grant EP/T001062/1 and the QuantERA ERA-NET Co-fund in Quantum Technologies implemented within the European Union\u2019s Horizon 2020 Programme. This research is part of the Munich Quantum Valley, which is supported by the Bavarian state government with funds from the Hightech Agenda Bayern Plus. S.G. is supported by a studentship in the Quantum Systems Engineering Skills and Training Hub at Imperial College London funded by EP-SRC (EP/P510257/1). D.M. acknowledges funding from ERC Advanced Grant QUENOCOBA under the EU Horizon 2020 program (Grant Agreement No. 742102). A.S. was supported by a research fellowship from the The Royal Commission for the Exhibition of 1851. We acknowledge the use of IBM Quantum services for this work. The views expressed are those of the authors, and do not reflect the official policy or position of IBM or the IBM Quantum team.
Publisher Copyright:
© 2024 Verein zur Forderung des Open Access Publizierens in den Quantenwissenschaften. All rights reserved.