Nucleon-nucleus optical potential in the particle-hole approach

Barbieri, C.; Jennings, B.K.

doi:10.1103/physrevc.72.014613

Cited by 69 publications

(106 citation statements)

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“…As remarked in the text of the Letter, we use the encodings {|H , |V }≡{|0 , |1 }, with H/V the horizontal/vertical polarization states of a single photon, and {|r , |ℓ }≡{|0 , |1 }, where r and ℓ are the path followed by the photons emerging from the HE stage introduced and exploited in [14,21,26,27].…”

Section: Resource Production and State Characterizationmentioning

confidence: 99%

“…They are potentially useful resource for the implementation of protocols for distributed quantum communication such as quantum secret sharing [17], quantum telecloning (QTC) [18], and open destination teleportation (ODT) [19,20]. So far, such opportunities have only been examined theoretically and confirmed indirectly [12,13], leaving a full implementation of such protocols unaddressed.In this Letter, we report the experimental demonstration of 1→ 3 QTC and ODT of logical states using a four-qubit symmetric Dicke state with two excitations realized using a highquality hyperentangled (HE) photonic resource [14,21]. The entanglement-sharing structure of the state has been characterized quantitatively using a structural entanglement witness for symmetric Dicke states [22,23] and fidelity-based entanglement witnesses for the three-and two-qubit states achieved upon subjecting the Dicke register to proper single-qubit projections [13].…”

mentioning

confidence: 99%

“…In this Letter, we report the experimental demonstration of 1→ 3 QTC and ODT of logical states using a four-qubit symmetric Dicke state with two excitations realized using a highquality hyperentangled (HE) photonic resource [14,21]. The entanglement-sharing structure of the state has been characterized quantitatively using a structural entanglement witness for symmetric Dicke states [22,23] and fidelity-based entanglement witnesses for the three-and two-qubit states achieved upon subjecting the Dicke register to proper single-qubit projections [13].…”

mentioning

confidence: 99%

“…The high fidelities achieved between the experiments and theory (as large as 96%, on average, for ODT) demonstrate the usefulness of Dicke states as resources for distributed quantum communication beyond the limitations of a "proof of principle". Our scheme is well suited for implementing 1→N>3 QTC of logical states or ODT with more than three receivers via the realization of larger HE resources, which is a realistic possibility.Resource production and state characterization.-The building block of our experiment is the source of two-photon fourqubit polarization-path HE states developed in [21,25] and used recently to test multi-partite entanglement, decoherence and general quantum correlations [14,26,27]. Such apparatus has been modified as described in the Supplementary Information [SI] [29] to produce the HE state |ξ abcd =[|HH ab (|rℓ − |ℓr ) cd + 2|VV ab |rℓ ] cd / √ 6.…”

mentioning

confidence: 99%

“…Resource production and state characterization.-The building block of our experiment is the source of two-photon fourqubit polarization-path HE states developed in [21,25] and used recently to test multi-partite entanglement, decoherence and general quantum correlations [14,26,27]. Such apparatus has been modified as described in the Supplementary Information [SI] [29] to produce the HE state |ξ abcd =[|HH ab (|rℓ − |ℓr ) cd + 2|VV ab |rℓ ] cd / √ 6.…”

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confidence: 99%

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Experimental Quantum Networking Protocols via Four-Qubit Hyperentangled Dicke States

et al. 2012

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We report the experimental demonstration of two quantum networking protocols, namely quantum 1→3 telecloning and open-destination teleportation, implemented using a four-qubit register whose state is encoded in a high-quality two-photon hyperentangled Dicke state. The state resource is characterized using criteria based on multipartite entanglement witnesses. We explore the characteristic entanglement-sharing structure of a Dicke state by implementing high-fidelity projections of the four-qubit resource onto lower-dimensional states. Our work demonstrates for the first time the usefulness of Dicke states for quantum information processing. PACS numbers: 42.50.Dv,03.67.Bg,42.50.Ex Networking offers the benefits of connectivity and sharing, often allowing for tasks that individuals are unable to accomplish on their own. This is known for computing, where grids of processors outperform the computational power of single machines or allow the storage of much larger databases. It should thus be expected that similar advantages are transferred to the realm of quantum information. Quantum networking, where a given task is pursued by a lattice of local nodes sharing (possibly entangled) quantum channels, is emerging as a realistic scenario for the implementation of quantum protocols requiring medium/large registers. Key examples of such approach are given by quantum repeaters [1], non-local gates [2], scheme for light-mediated interactions of distant matter qubits [3] and one-way quantum computation [4].In this scenario, photonics is playing an important role: the high reconfigurability of photonic setups and outstanding technical improvements have facilitated the birth of a new generation of experiments (performed both in bulk optics and, recently, in integrated photonic circuits [5]) that have demonstrated multi-photon quantum control towards high-fidelity computing with registers of a size inaccessible until only recently [6][7][8][9][10][11]. The design of complex interferometers and the exploitation of multiple degrees of freedom of a single photonic information carrier have enabled the production of interesting states, such as cluster/graph states, GHZ-like states and (phased) Dicke states [12][13][14], among others [15,16]. Dicke states have been successfully used to characterize multipartite entanglement close to fully symmetric states and its robustness to decoherence [14]. They are potentially useful resource for the implementation of protocols for distributed quantum communication such as quantum secret sharing [17], quantum telecloning (QTC) [18], and open destination teleportation (ODT) [19,20]. So far, such opportunities have only been examined theoretically and confirmed indirectly [12,13], leaving a full implementation of such protocols unaddressed.In this Letter, we report the experimental demonstration of 1→ 3 QTC and ODT of logical states using a four-qubit symmetric Dicke state with two excitations realized using a highquality hyperentangled (HE) photonic resource [14,21]. The entanglement-sharing ...

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Section: Resource Production and State Characterizationmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Experimental Quantum Networking Protocols via Four-Qubit Hyperentangled Dicke States

et al. 2012

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The Linear Optical Unambiguous Discrimination of Hyperentangled Bell States Assisted by Time Bin

et al. 2019

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A linear optical unambiguous discrimination of hyperentangled Bell states is proposed for two-photon systems entangled in both the polarization and momentum degrees of freedom (DOFs) assisted by time bin. This unambiguous discrimination scheme can completely identify 16 orthogonal hyperentangled Bell states using only linear optical elements, where the function of the auxiliary entangled Bell state is replaced by time bin. Moreover, the possibility of extending this scheme for distinguishing hyperentangled Bell states in n DOFs is discussed, and it shows that 2 n+k+1 hyperentangled Bell states in n (n ≥ 2) DOFs can be distinguished with k (k < n) auxiliary entangled states of additional DOFs by introducing a time delay, which decreases the auxiliary entanglement resource required for unambiguous discrimination of hyperentangled Bell state. Therefore, this scheme provides a new way for distinguishing hyperentangled states with current technology, which will extend the application of discrimination of hyperentangled states via linear optics to other quantum information protocols besides hyperdense coding schemes in the future. IntroductionPhoton system is one of the most interesting candidates for quantum communication with the character of manipulability, high-speed transmission, and high capacity. The entangled photon system is a crucial quantum resource in quantum communication, which has many important applications in quantum communication protocols, such as quantum key distribution, [1][2][3][4] quantum secret sharing, [5] quantum dense coding, [6,7] quantumThe ORCID identification number(s) for the author(s) of this article can be found under https://doi.

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