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A Schrödinger cat living in two boxes.

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Title: A Schrödinger cat living in two boxes.
Authors: Chen Wang, Gao, Yvonne Y., Reinhold, Philip, Heeres, R. W., Ofek, Nissim, Kevin Chou, Axline, Christopher, Reagor, Matthew, Blumoff, Jacob, Sliwa, K. M., Frunzio, L., Girvin, S. M., Liang Jiang, Mirrahimi, M., Devoret, M. H., Schoelkopf, R. J.
Source: Science (pre-March 2025). 5/27/2016, Vol. 352 Issue 6289, p1087-1091. 5p.
Subjects: Quantum theory, Harmonic oscillators, Electromagnetic fields, Atoms, Quantum computing
Abstract: Quantum superpositions of distinct coherent states in a single-mode harmonic oscillator, known as "cat states," have been an elegant demonstration of Schrüdinger's famous cat paradox. Here, we realize a two-mode cat state of electromagnetic fields in two microwave cavities bridged by a superconducting artificial atom, which can also be viewed as an entangled pair of single-cavity cat states.We present full quantum state tomography of this complex cat state over a Hilbert space exceeding 100 dimensions via quantum nondemolition measurements of the joint photon number parity. The ability to manipulate such multicavity quantum states paves the way for logical operations between redundantly encoded qubits for fault-tolerant quantum computation and communication. [ABSTRACT FROM AUTHOR]
Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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PubType: Academic Journal
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  Data: <searchLink fieldCode="AR" term="%22Chen+Wang%22">Chen Wang</searchLink><br /><searchLink fieldCode="AR" term="%22Gao%2C+Yvonne+Y%2E%22">Gao, Yvonne Y.</searchLink><br /><searchLink fieldCode="AR" term="%22Reinhold%2C+Philip%22">Reinhold, Philip</searchLink><br /><searchLink fieldCode="AR" term="%22Heeres%2C+R%2E+W%2E%22">Heeres, R. W.</searchLink><br /><searchLink fieldCode="AR" term="%22Ofek%2C+Nissim%22">Ofek, Nissim</searchLink><br /><searchLink fieldCode="AR" term="%22Kevin+Chou%22">Kevin Chou</searchLink><br /><searchLink fieldCode="AR" term="%22Axline%2C+Christopher%22">Axline, Christopher</searchLink><br /><searchLink fieldCode="AR" term="%22Reagor%2C+Matthew%22">Reagor, Matthew</searchLink><br /><searchLink fieldCode="AR" term="%22Blumoff%2C+Jacob%22">Blumoff, Jacob</searchLink><br /><searchLink fieldCode="AR" term="%22Sliwa%2C+K%2E+M%2E%22">Sliwa, K. M.</searchLink><br /><searchLink fieldCode="AR" term="%22Frunzio%2C+L%2E%22">Frunzio, L.</searchLink><br /><searchLink fieldCode="AR" term="%22Girvin%2C+S%2E+M%2E%22">Girvin, S. M.</searchLink><br /><searchLink fieldCode="AR" term="%22Liang+Jiang%22">Liang Jiang</searchLink><br /><searchLink fieldCode="AR" term="%22Mirrahimi%2C+M%2E%22">Mirrahimi, M.</searchLink><br /><searchLink fieldCode="AR" term="%22Devoret%2C+M%2E+H%2E%22">Devoret, M. H.</searchLink><br /><searchLink fieldCode="AR" term="%22Schoelkopf%2C+R%2E+J%2E%22">Schoelkopf, R. J.</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Science+%28pre-March+2025%29%22">Science (pre-March 2025)</searchLink>. 5/27/2016, Vol. 352 Issue 6289, p1087-1091. 5p.
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  Data: <searchLink fieldCode="DE" term="%22Quantum+theory%22">Quantum theory</searchLink><br /><searchLink fieldCode="DE" term="%22Harmonic+oscillators%22">Harmonic oscillators</searchLink><br /><searchLink fieldCode="DE" term="%22Electromagnetic+fields%22">Electromagnetic fields</searchLink><br /><searchLink fieldCode="DE" term="%22Atoms%22">Atoms</searchLink><br /><searchLink fieldCode="DE" term="%22Quantum+computing%22">Quantum computing</searchLink>
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  Data: Quantum superpositions of distinct coherent states in a single-mode harmonic oscillator, known as "cat states," have been an elegant demonstration of Schrüdinger's famous cat paradox. Here, we realize a two-mode cat state of electromagnetic fields in two microwave cavities bridged by a superconducting artificial atom, which can also be viewed as an entangled pair of single-cavity cat states.We present full quantum state tomography of this complex cat state over a Hilbert space exceeding 100 dimensions via quantum nondemolition measurements of the joint photon number parity. The ability to manipulate such multicavity quantum states paves the way for logical operations between redundantly encoded qubits for fault-tolerant quantum computation and communication. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=pbh&AN=115780817
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