A quantum memory with near-millisecond coherence in circuit QED
Significant advances in coherence have made superconducting quantum circuits a viable platform for fault-tolerant quantum computing. To further extend capabilities, highly coherent quantum systems could act as quantum memories for these circuits. A useful quantum memory must be rapidly addressable b...
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| creator | Reagor, Matthew Pfaff, Wolfgang Axline, Christopher Heeres, Reinier W Ofek, Nissim Sliwa, Katrina Holland, Eric Wang, Chen Blumoff, Jacob Chou, Kevin Hatridge, Michael J Frunzio, Luigi Devoret, Michel H Jiang, Liang Schoelkopf, Robert J |
| description | Significant advances in coherence have made superconducting quantum circuits a viable platform for fault-tolerant quantum computing. To further extend capabilities, highly coherent quantum systems could act as quantum memories for these circuits. A useful quantum memory must be rapidly addressable by qubits, while maintaining superior coherence. We demonstrate a novel superconducting microwave cavity architecture that is highly robust against major sources of loss that are encountered in the engineering of circuit QED systems. The architecture allows for near-millisecond storage of quantum states in a resonator while strong coupling between the resonator and a transmon qubit enables control, encoding, and readout at MHz rates. The observed coherence times constitute an improvement of almost an order of magnitude over those of the best available superconducting qubits. Our design is an ideal platform for studying coherent quantum optics and marks an important step towards hardware-efficient quantum computing with Josephson junction-based quantum circuits. |
| doi_str_mv | 10.48550/arxiv.1508.05882 |
| format | Article |
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To further extend capabilities, highly coherent quantum systems could act as quantum memories for these circuits. A useful quantum memory must be rapidly addressable by qubits, while maintaining superior coherence. We demonstrate a novel superconducting microwave cavity architecture that is highly robust against major sources of loss that are encountered in the engineering of circuit QED systems. The architecture allows for near-millisecond storage of quantum states in a resonator while strong coupling between the resonator and a transmon qubit enables control, encoding, and readout at MHz rates. The observed coherence times constitute an improvement of almost an order of magnitude over those of the best available superconducting qubits. 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Our design is an ideal platform for studying coherent quantum optics and marks an important step towards hardware-efficient quantum computing with Josephson junction-based quantum circuits.</description><subject>Architecture</subject><subject>Circuits</subject><subject>Coherence</subject><subject>Computation</subject><subject>Fault tolerance</subject><subject>Josephson junctions</subject><subject>Physics - Mesoscale and Nanoscale Physics</subject><subject>Physics - Quantum Physics</subject><subject>Physics - Superconductivity</subject><subject>Quantum computing</subject><subject>Quantum electrodynamics</subject><subject>Quantum optics</subject><subject>Quantum phenomena</subject><subject>Quantum theory</subject><subject>Qubits (quantum computing)</subject><subject>Resonators</subject><subject>Superconductivity</subject><issn>2331-8422</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GOX</sourceid><recordid>eNotj0tLw0AUhQdBsNT-AFcOuE6880omKym1PqAgQvdhMnOHTsmjnSRq_72xdXXO4uNwPkLuGKRSKwWPJv6Er5Qp0CkorfkVmXEhWKIl5zdk0fd7AOBZzpUSM_K0pMfRtMPY0AabLp7odxh2tEUTkybUdejRdq2jttthxNYiDS21IdoxDPRz_XxLrr2pe1z855xsX9bb1Vuy-Xh9Xy03iVG8SBTXVSWcyHPjC-kZt0wi4tQ0MHSZkRoqJZzyVltbOCeYcbl3wsjKFD4Tc3J_mT3blYcYGhNP5Z9lebaciIcLcYjdccR-KPfdGNvpU8lBgwDJskL8AsI9VSQ</recordid><startdate>20150825</startdate><enddate>20150825</enddate><creator>Reagor, Matthew</creator><creator>Pfaff, Wolfgang</creator><creator>Axline, Christopher</creator><creator>Heeres, Reinier W</creator><creator>Ofek, Nissim</creator><creator>Sliwa, Katrina</creator><creator>Holland, Eric</creator><creator>Wang, Chen</creator><creator>Blumoff, Jacob</creator><creator>Chou, Kevin</creator><creator>Hatridge, Michael J</creator><creator>Frunzio, Luigi</creator><creator>Devoret, Michel H</creator><creator>Jiang, Liang</creator><creator>Schoelkopf, Robert J</creator><general>Cornell University Library, arXiv.org</general><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>L6V</scope><scope>M7S</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>GOX</scope></search><sort><creationdate>20150825</creationdate><title>A quantum memory with near-millisecond coherence in circuit QED</title><author>Reagor, Matthew ; 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| subjects | Architecture Circuits Coherence Computation Fault tolerance Josephson junctions Physics - Mesoscale and Nanoscale Physics Physics - Quantum Physics Physics - Superconductivity Quantum computing Quantum electrodynamics Quantum optics Quantum phenomena Quantum theory Qubits (quantum computing) Resonators Superconductivity |
| title | A quantum memory with near-millisecond coherence in circuit QED |
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