+1 Recommend
1 collections
      • Record: found
      • Abstract: found
      • Article: found

      Superconducting Qubits: Current State of Play

      Read this article at

          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.


          Superconducting qubits are leading candidates in the race to build a quantum computer capable of realizing computations beyond the reach of modern supercomputers. The superconducting qubit modality has been used to demonstrate prototype algorithms in the noisy intermediate-scale quantum (NISQ) technology era, in which non-error-corrected qubits are used to implement quantum simulations and quantum algorithms. With the recent demonstrations of multiple high-fidelity, two-qubit gates as well as operations on logical qubits in extensible superconducting qubit systems, this modality also holds promise for the longer-term goal of building larger-scale error-corrected quantum computers. In this brief review, we discuss several of the recent experimental advances in qubit hardware, gate implementations, readout capabilities, early NISQ algorithm implementations, and quantum error correction using superconducting qubits. Although continued work on many aspects of this technology is certainly necessary, the pace of both conceptual and technical progress in recent years has been impressive, and here we hope to convey the excitement stemming from this progress.

          Related collections

          Most cited references144

          • Record: found
          • Abstract: found
          • Article: not found

          Universal Quantum Simulators

          Lloyd (1996)
          Feynman's 1982 conjecture, that quantum computers can be programmed to simulate any local quantum system, is shown to be correct.
            • Record: found
            • Abstract: found
            • Article: not found

            Strong coupling of a single photon to a superconducting qubit using circuit quantum electrodynamics.

            The interaction of matter and light is one of the fundamental processes occurring in nature, and its most elementary form is realized when a single atom interacts with a single photon. Reaching this regime has been a major focus of research in atomic physics and quantum optics for several decades and has generated the field of cavity quantum electrodynamics. Here we perform an experiment in which a superconducting two-level system, playing the role of an artificial atom, is coupled to an on-chip cavity consisting of a superconducting transmission line resonator. We show that the strong coupling regime can be attained in a solid-state system, and we experimentally observe the coherent interaction of a superconducting two-level system with a single microwave photon. The concept of circuit quantum electrodynamics opens many new possibilities for studying the strong interaction of light and matter. This system can also be exploited for quantum information processing and quantum communication and may lead to new approaches for single photon generation and detection.
              • Record: found
              • Abstract: found
              • Article: not found

              Superconducting circuits for quantum information: an outlook.

              The performance of superconducting qubits has improved by several orders of magnitude in the past decade. These circuits benefit from the robustness of superconductivity and the Josephson effect, and at present they have not encountered any hard physical limits. However, building an error-corrected information processor with many such qubits will require solving specific architecture problems that constitute a new field of research. For the first time, physicists will have to master quantum error correction to design and operate complex active systems that are dissipative in nature, yet remain coherent indefinitely. We offer a view on some directions for the field and speculate on its future.

                Author and article information

                Annual Review of Condensed Matter Physics
                Annu. Rev. Condens. Matter Phys.
                Annual Reviews
                March 10 2020
                March 10 2020
                : 11
                : 1
                : 369-395
                [1 ]Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA;
                [2 ]MIT Lincoln Laboratory, Lexington, Massachusetts 02421, USA
                [3 ]Microtechnology and Nanoscience, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
                [4 ]Department of Physics and Department of Electrical Engineering & Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA;
                © 2020

                Earth & Environmental sciences,Medicine,Chemistry,Social & Behavioral Sciences,Economics,Life sciences


                Comment on this article