On-chip generation of high-dimensional entangled quantum states and their coherent control

Stefania Sciara, Alfonso Carmelo Cino, Lucia Caspani, Michael Kues, Benjamin Wetzel, Christian Reimer, Yanbing Zhang, Luis Romero Cortés, Piotr Roztocki, Stefania Sciara, Roberto Morandotti, José Azaña, David J. Moss, Brent E. Little, Sai T. Chu

Risultato della ricerca: Article

171 Citazioni (Scopus)

Abstract

Optical quantum states based on entangled photons are essential for solving questions in fundamental physics and are at the heart of quantum information science1. Specifically, the realization of high-dimensional states (D-level quantum systems, that is, qudits, with D > 2) and their control are necessary for fundamental investigations of quantum mechanics2, for increasing the sensitivity of quantum imaging schemes3, for improving the robustness and key rate of quantum communication protocols4, for enabling a richer variety of quantum simulations5, and for achieving more efficient and error-tolerant quantum computation6. Integrated photonics has recently become a leading platform for the compact, cost-efficient, and stable generation and processing of non-classical optical states7. However, so far, integrated entangled quantum sources have been limited to qubits (D = 2)8-11. Here we demonstrate on-chip generation of entangled qudit states, where the photons are created in a coherent superposition of multiple high-purity frequency modes. In particular, we confirm the realization of a quantum system with at least one hundred dimensions, formed by two entangled qudits with D = 10. Furthermore, using state-of-the-art, yet off-the-shelf telecommunications components, we introduce a coherent manipulation platform with which to control frequency-entangled states, capable of performing deterministic high-dimensional gate operations. We validate this platform by measuring Bell inequality violations and performing quantum state tomography. Our work enables the generation and processing of high-dimensional quantum states in a single spatial mode.
Lingua originaleEnglish
pagine (da-a)622-626
Numero di pagine5
RivistaNature
Volume546
Stato di pubblicazionePublished - 2017

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Cita questo

Sciara, S., Cino, A. C., Caspani, L., Kues, M., Wetzel, B., Reimer, C., ... Chu, S. T. (2017). On-chip generation of high-dimensional entangled quantum states and their coherent control. Nature, 546, 622-626.

On-chip generation of high-dimensional entangled quantum states and their coherent control. / Sciara, Stefania; Cino, Alfonso Carmelo; Caspani, Lucia; Kues, Michael; Wetzel, Benjamin; Reimer, Christian; Zhang, Yanbing; Cortés, Luis Romero; Roztocki, Piotr; Sciara, Stefania; Morandotti, Roberto; Azaña, José; Moss, David J.; Little, Brent E.; Chu, Sai T.

In: Nature, Vol. 546, 2017, pag. 622-626.

Risultato della ricerca: Article

Sciara, S, Cino, AC, Caspani, L, Kues, M, Wetzel, B, Reimer, C, Zhang, Y, Cortés, LR, Roztocki, P, Sciara, S, Morandotti, R, Azaña, J, Moss, DJ, Little, BE & Chu, ST 2017, 'On-chip generation of high-dimensional entangled quantum states and their coherent control', Nature, vol. 546, pagg. 622-626.
Sciara, Stefania ; Cino, Alfonso Carmelo ; Caspani, Lucia ; Kues, Michael ; Wetzel, Benjamin ; Reimer, Christian ; Zhang, Yanbing ; Cortés, Luis Romero ; Roztocki, Piotr ; Sciara, Stefania ; Morandotti, Roberto ; Azaña, José ; Moss, David J. ; Little, Brent E. ; Chu, Sai T. / On-chip generation of high-dimensional entangled quantum states and their coherent control. In: Nature. 2017 ; Vol. 546. pagg. 622-626.
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abstract = "Optical quantum states based on entangled photons are essential for solving questions in fundamental physics and are at the heart of quantum information science1. Specifically, the realization of high-dimensional states (D-level quantum systems, that is, qudits, with D > 2) and their control are necessary for fundamental investigations of quantum mechanics2, for increasing the sensitivity of quantum imaging schemes3, for improving the robustness and key rate of quantum communication protocols4, for enabling a richer variety of quantum simulations5, and for achieving more efficient and error-tolerant quantum computation6. Integrated photonics has recently become a leading platform for the compact, cost-efficient, and stable generation and processing of non-classical optical states7. However, so far, integrated entangled quantum sources have been limited to qubits (D = 2)8-11. Here we demonstrate on-chip generation of entangled qudit states, where the photons are created in a coherent superposition of multiple high-purity frequency modes. In particular, we confirm the realization of a quantum system with at least one hundred dimensions, formed by two entangled qudits with D = 10. Furthermore, using state-of-the-art, yet off-the-shelf telecommunications components, we introduce a coherent manipulation platform with which to control frequency-entangled states, capable of performing deterministic high-dimensional gate operations. We validate this platform by measuring Bell inequality violations and performing quantum state tomography. Our work enables the generation and processing of high-dimensional quantum states in a single spatial mode.",
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AU - Sciara, Stefania

AU - Cino, Alfonso Carmelo

AU - Caspani, Lucia

AU - Kues, Michael

AU - Wetzel, Benjamin

AU - Reimer, Christian

AU - Zhang, Yanbing

AU - Cortés, Luis Romero

AU - Roztocki, Piotr

AU - Sciara, Stefania

AU - Morandotti, Roberto

AU - Azaña, José

AU - Moss, David J.

AU - Little, Brent E.

AU - Chu, Sai T.

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N2 - Optical quantum states based on entangled photons are essential for solving questions in fundamental physics and are at the heart of quantum information science1. Specifically, the realization of high-dimensional states (D-level quantum systems, that is, qudits, with D > 2) and their control are necessary for fundamental investigations of quantum mechanics2, for increasing the sensitivity of quantum imaging schemes3, for improving the robustness and key rate of quantum communication protocols4, for enabling a richer variety of quantum simulations5, and for achieving more efficient and error-tolerant quantum computation6. Integrated photonics has recently become a leading platform for the compact, cost-efficient, and stable generation and processing of non-classical optical states7. However, so far, integrated entangled quantum sources have been limited to qubits (D = 2)8-11. Here we demonstrate on-chip generation of entangled qudit states, where the photons are created in a coherent superposition of multiple high-purity frequency modes. In particular, we confirm the realization of a quantum system with at least one hundred dimensions, formed by two entangled qudits with D = 10. Furthermore, using state-of-the-art, yet off-the-shelf telecommunications components, we introduce a coherent manipulation platform with which to control frequency-entangled states, capable of performing deterministic high-dimensional gate operations. We validate this platform by measuring Bell inequality violations and performing quantum state tomography. Our work enables the generation and processing of high-dimensional quantum states in a single spatial mode.

AB - Optical quantum states based on entangled photons are essential for solving questions in fundamental physics and are at the heart of quantum information science1. Specifically, the realization of high-dimensional states (D-level quantum systems, that is, qudits, with D > 2) and their control are necessary for fundamental investigations of quantum mechanics2, for increasing the sensitivity of quantum imaging schemes3, for improving the robustness and key rate of quantum communication protocols4, for enabling a richer variety of quantum simulations5, and for achieving more efficient and error-tolerant quantum computation6. Integrated photonics has recently become a leading platform for the compact, cost-efficient, and stable generation and processing of non-classical optical states7. However, so far, integrated entangled quantum sources have been limited to qubits (D = 2)8-11. Here we demonstrate on-chip generation of entangled qudit states, where the photons are created in a coherent superposition of multiple high-purity frequency modes. In particular, we confirm the realization of a quantum system with at least one hundred dimensions, formed by two entangled qudits with D = 10. Furthermore, using state-of-the-art, yet off-the-shelf telecommunications components, we introduce a coherent manipulation platform with which to control frequency-entangled states, capable of performing deterministic high-dimensional gate operations. We validate this platform by measuring Bell inequality violations and performing quantum state tomography. Our work enables the generation and processing of high-dimensional quantum states in a single spatial mode.

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