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Emission and coherent control of Levitons in graphene.

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Title: Emission and coherent control of Levitons in graphene.
Authors: Assouline, A., Pugliese, L., Chakraborti, H., Lee, Seunghun, Bernabeu, L., Jo, M., Watanabe, K., Taniguchi, T., Glattli, D. C., Kumada, N., Sim, H.-S., Parmentier, F. D., Roulleau, P.
Source: Science (pre-March 2025). 12/15/2023, Vol. 382 Issue 6676, p1260-1264. 5p. 5 Graphs.
Subjects: Emission control, Graphene, Planck's constant, Quantum optics, Aharonov-Bohm effect, Electromagnetic pulses, Quantum dots
Abstract: Flying qubits encode quantum information in propagating modes instead of stationary discrete states. Although photonic flying qubits are available, the weak interaction between photons limits the efficiency of conditional quantum gates. Conversely, electronic flying qubits can use Coulomb interactions, but the weaker quantum coherence in conventional semiconductors has hindered their realization. In this work, we engineered on-demand injection of a single electronic flying qubit state and its manipulation over the Bloch sphere. The flying qubit is a Leviton propagating in quantum Hall edge channels of a high-mobility graphene monolayer. Although single-shot qubit readout and two-qubit operations are still needed for a viable manipulation of flying qubits, the coherent manipulation of an itinerant electronic state at the single-electron level presents a highly promising alternative to conventional qubits. [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: Emission and coherent control of Levitons in graphene.
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  Data: <searchLink fieldCode="AR" term="%22Assouline%2C+A%2E%22">Assouline, A.</searchLink><br /><searchLink fieldCode="AR" term="%22Pugliese%2C+L%2E%22">Pugliese, L.</searchLink><br /><searchLink fieldCode="AR" term="%22Chakraborti%2C+H%2E%22">Chakraborti, H.</searchLink><br /><searchLink fieldCode="AR" term="%22Lee%2C+Seunghun%22">Lee, Seunghun</searchLink><br /><searchLink fieldCode="AR" term="%22Bernabeu%2C+L%2E%22">Bernabeu, L.</searchLink><br /><searchLink fieldCode="AR" term="%22Jo%2C+M%2E%22">Jo, M.</searchLink><br /><searchLink fieldCode="AR" term="%22Watanabe%2C+K%2E%22">Watanabe, K.</searchLink><br /><searchLink fieldCode="AR" term="%22Taniguchi%2C+T%2E%22">Taniguchi, T.</searchLink><br /><searchLink fieldCode="AR" term="%22Glattli%2C+D%2E+C%2E%22">Glattli, D. C.</searchLink><br /><searchLink fieldCode="AR" term="%22Kumada%2C+N%2E%22">Kumada, N.</searchLink><br /><searchLink fieldCode="AR" term="%22Sim%2C+H%2E-S%2E%22">Sim, H.-S.</searchLink><br /><searchLink fieldCode="AR" term="%22Parmentier%2C+F%2E+D%2E%22">Parmentier, F. D.</searchLink><br /><searchLink fieldCode="AR" term="%22Roulleau%2C+P%2E%22">Roulleau, P.</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Science+%28pre-March+2025%29%22">Science (pre-March 2025)</searchLink>. 12/15/2023, Vol. 382 Issue 6676, p1260-1264. 5p. 5 Graphs.
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  Data: <searchLink fieldCode="DE" term="%22Emission+control%22">Emission control</searchLink><br /><searchLink fieldCode="DE" term="%22Graphene%22">Graphene</searchLink><br /><searchLink fieldCode="DE" term="%22Planck's+constant%22">Planck's constant</searchLink><br /><searchLink fieldCode="DE" term="%22Quantum+optics%22">Quantum optics</searchLink><br /><searchLink fieldCode="DE" term="%22Aharonov-Bohm+effect%22">Aharonov-Bohm effect</searchLink><br /><searchLink fieldCode="DE" term="%22Electromagnetic+pulses%22">Electromagnetic pulses</searchLink><br /><searchLink fieldCode="DE" term="%22Quantum+dots%22">Quantum dots</searchLink>
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  Data: Flying qubits encode quantum information in propagating modes instead of stationary discrete states. Although photonic flying qubits are available, the weak interaction between photons limits the efficiency of conditional quantum gates. Conversely, electronic flying qubits can use Coulomb interactions, but the weaker quantum coherence in conventional semiconductors has hindered their realization. In this work, we engineered on-demand injection of a single electronic flying qubit state and its manipulation over the Bloch sphere. The flying qubit is a Leviton propagating in quantum Hall edge channels of a high-mobility graphene monolayer. Although single-shot qubit readout and two-qubit operations are still needed for a viable manipulation of flying qubits, the coherent manipulation of an itinerant electronic state at the single-electron level presents a highly promising alternative to conventional qubits. [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=174225084
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        Value: 10.1126/science.adf9887
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      – Code: eng
        Text: English
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        PageCount: 5
        StartPage: 1260
    Subjects:
      – SubjectFull: Emission control
        Type: general
      – SubjectFull: Graphene
        Type: general
      – SubjectFull: Planck's constant
        Type: general
      – SubjectFull: Quantum optics
        Type: general
      – SubjectFull: Aharonov-Bohm effect
        Type: general
      – SubjectFull: Electromagnetic pulses
        Type: general
      – SubjectFull: Quantum dots
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      – TitleFull: Emission and coherent control of Levitons in graphene.
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              Text: 12/15/2023
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              Y: 2023
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