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Entangled cloud storage

Giuseppe Ateniese, Özgür Dagdelen, Ivan Damgård, Daniele Venturi
2016 Future generations computer systems  
Entangled cloud storage enables a set of clients {P i } to "entangle" their files {f i } into a single clew c to be stored by a (potentially malicious) cloud provider S.  ...  We provide theoretical foundations for entangled cloud storage, introducing the notion of an entangled encoding scheme that guarantees strong security requirements capturing the properties above.  ...  Entangled Storage Scheme In a nutshell, an entangled storage scheme ESS = (Gen, Π ETG , Π RCV ) implements an entangled encoding scheme (cf. Definition 3.1) in the cloud setting.  ... 
doi:10.1016/j.future.2016.01.008 fatcat:p5s2miimnbc7hhqgfboze6msvu

Robust and Simple N-Party Entangled Authentication Cloud Storage Protocol Based on Secret Sharing Scheme

Hongfeng Zhu, Tianhua Liu, Dan Zhu, Haiyang Li
2013 Journal of Information Hiding and Multimedia Signal Processing  
Entangled cloud storage schemes think in different ways with traditional cloud storage secure schemes which provide high level security to force cloud storage servers for treating equally between normal  ...  We develop a novel scheme, called EACS (entangled authenticated cloud storage), to settle the aforementioned typical problem.  ...  ., U t decide to establish a entangled cloud storage for any cloud storage provider. Step1. A designated user of the group, called the initiator, sends a entangled-storage request to EKC.  ... 
dblp:journals/jihmsp/ZhuLZL13 fatcat:hlx35t3bn5chdbgxdcn45tyc7u

On the Cost of Safe Storage for Public Clouds: An Experimental Evaluation

Dorian Burihabwa, Rogerio Pontes, Pascal Felber, Francisco Maia, Hugues Mercier, Rui Oliveira, Joao Paulo, Valerio Schiavoni
2016 2016 IEEE 35th Symposium on Reliable Distributed Systems (SRDS)  
Cloud-based storage services such as Dropbox, Google Drive and OneDrive are increasingly popular for storing enterprise data, and they have already become the de facto choice for cloud-based backup of  ...  This practical experience report studies a wide range of security mechanisms that can be used atop standard cloud-based storage services.  ...  In this paper we implement, deploy and evaluate entanglement techniques atop unmodified third-party public cloud storage providers.  ... 
doi:10.1109/srds.2016.028 dblp:conf/srds/BurihabwaPFMMOP16 fatcat:zra3dp2fujcqlmpu2wlnxlsssm

Tangled memories

Lene Vestergaard Hau
2008 Nature  
The storage of entangled optical fields in two separated atom clouds also needs to be formally demonstrated.  ...  The authors show that the entanglement of two light fields also survives such storage.  ... 
doi:10.1038/452037a pmid:18322518 fatcat:4redrpx3l5df5h5jpmhe754rfm

Generation of polarization-entangled photon pairs in a cold atomic ensemble

Yuelong Wu, Shujing Li, Wei Ge, Zhongxiao Xu, Long Tian, Hai Wang
2016 Science Bulletin  
The presented polarization-entangled photon source has high entanglement degree and fast generation rate, which will promise us to apply it in future quantum repeater.  ...  We report an experimental generation of polarization-entangled photon pairs in a cold atomic ensemble.  ...  A cloud of cold 87 Rb atoms is used to generate polarization-entangled photon pairs.  ... 
doi:10.1007/s11434-015-0985-7 fatcat:2ydul7ajwnfxnmynxwsybbunai

Entangled Encodings and Data Entanglement

Giuseppe Ateniese, Özgür Dagdelen, Ivan Damgård, Daniele Venturi
2015 Proceedings of the 3rd International Workshop on Security in Cloud Computing - SCC '15  
Entangled cloud storage (Aspnes et al., ESORICS 2004) enables a set of clients to "entangle" their files into a single clew to be stored by a (potentially malicious) cloud provider.  ...  Protocols for entangled cloud storage find application in the cloud setting, where clients store their files on a remote server and need to be ensured that the cloud provider will not modify or delete  ...  Entangled Storage of Data In this section we present our model for entangled storage in the cloud setting.  ... 
doi:10.1145/2732516.2732524 dblp:conf/ccs/AtenieseDDV15 fatcat:2obou63uqzbv5ll3a7ye375imq

Storage of polarization-encoded cluster states in an atomic system

Chun-Hua Yuan, Li-Qing Chen, Weiping Zhang
2009 Physical Review A. Atomic, Molecular, and Optical Physics  
We present a scheme for entanglement macroscopic atomic ensembles which are four spatially separate regions of an atomic cloud using cluster-correlated beams.  ...  We show that the cluster-type polarization-encoded entanglement could be mapped onto the long-lived collective ground state of the atomic ensembles, and the stored entanglement could be retrieved based  ...  [31] demonstrated that the entanglement of two light fields survives quantum storage using two atomic ensembles in a cold cloud, where they realized the coherent conversion of photonic entanglement  ... 
doi:10.1103/physreva.79.052342 fatcat:4swaqtdd7ngwvfgjkdys3xdulu

Pair-wise Entanglement Characterizing a Quantum State of an Atomic Ensemble Storing a Squeezed Light

Kaoru Shimizu, Daisuke Hashimoto, Alexander Lvovsky
2009 AIP Conference Proceedings  
This talk focused on two different ways to generate heralded entanglement between matter systems, a critical reqiurement for scalable quantum networking.  ...  Developments in quantum information science rely critically on entanglement, as its distribution between different parties enables quantum communication protocols, such as quantum key distribution or teleportation  ...  By spfitting a single-photon and subsequent state transfer, we separate the generation of entanglement and its storage.  ... 
doi:10.1063/1.3131323 fatcat:vhd2anvbozcfbhlljx5xikzbzq

PHYSICS: Teleporting a Quantum State to Distant Matter

M. S. Kim, J. Cho
2009 Science  
This achievement was then followed by the experimental proof of entangling two atomic clouds with photons as a mediator (15).  ...  Earlier, a pair of nonclassically corrected photons was generated by an atomic cloud (12, 13) .  ...  This achievement was then followed by the experimental proof of entangling two atomic clouds with photons as a mediator (15) .  ... 
doi:10.1126/science.1169279 pmid:19164736 fatcat:hxxwuj7gozhazfgh5un7vk77cm

A complex in psychosis

Solomon H. Snyder
2008 Nature  
The storage of entangled optical fields in two separated atom clouds also needs to be formally demonstrated.  ...  The authors show that the entanglement of two light fields also survives such storage.  ...  The storage of entangled optical fields in two separated atom clouds also needs to be formally demonstrated.  ... 
doi:10.1038/452038a pmid:18322519 fatcat:xneqjqdx55hrpfp7wxigads64i

Holographic Storage of Biphoton Entanglement [article]

Han-Ning Dai, Han Zhang, Sheng-Jun Yang, Tian-Ming Zhao, Jun Rui, You-Jin Deng, Li Li, Nai-Le Liu, Shuai Chen, Xiao-Hui Bao, Xian-Min Jin, Bo Zhao, Jian-Wei Pan
2012 arXiv   pre-print
Coherent and reversible storage of multi-photon entanglement with a multimode quantum memory is essential for scalable all-optical quantum information processing.  ...  Here we demonstrate a coherent and reversible storage of biphoton Bell-type entanglement with a holographic multimode atomic-ensemble-based quantum memory.  ...  The temperature of the atomic cloud is about 140 µK, and the optical depth (OD) is about 10.  ... 
arXiv:1204.1532v1 fatcat:t3w3nqusufg5hkczewimnwsgtm

Quantum interface between frequency-uncorrelated down-converted entanglement and atomic-ensemble quantum memory [article]

Xian-Min Jin, Jian Yang, Han Zhang, Han-Ning Dai, Sheng-Jun Yang, Tian-Ming Zhao, Jun Rui, Yu He, Xiao Jiang, Fan Yang, Ge-Sheng Pan, Zhen-Sheng Yuan, Youjin Deng, Zeng-Bing Chen (+4 others)
2010 arXiv   pre-print
The CHSH Bell's inequality is measured and violation is clearly observed for storage time up to 1 microsecond. This demonstrates the entanglement is stored and survives during the storage.  ...  The storage of a triggered single photon with arbitrary polarization is shown to reach an average fidelity of 92% for 200 ns storage time.  ...  In the experiment, the photonic state | | Storage of entanglement To demonstrate the storage of entanglement, we take away the polarizer before PBS1.  ... 
arXiv:1004.4691v1 fatcat:yhvmghlih5f5xizxrf3udysahm

Experimental demonstration of memory-enhanced scaling for entanglement connection of quantum repeater segments [article]

Yunfei Pu, Sheng Zhang, Yukai Wu, Nan Jiang, Wei Chang, Chang Li, Luming Duan
2021 arXiv   pre-print
Here we report an experiment which realizes efficient connection of two quantum repeater segments via on-demand entanglement swapping by the use of two atomic quantum memories with storage time of tens  ...  With the memory enhancement, scaling-changing acceleration is demonstrated in the rate for a successful entanglement connection.  ...  The time-invariant phase in the atom-photon entangled state during storage.  ... 
arXiv:2101.08541v1 fatcat:ptapridxvrd6jfm3bk4zkdniuq

Ensuring Data Durability with Increasingly Interdependent Content

Veronica Estrada Galinanes, Pascal Felber
2015 2015 IEEE International Conference on Cluster Computing  
In this paper, we analyse and evaluate helical entanglement codes (HEC), an XOR-based erasure coding algorithm that constructs long sequences of entangled data using incoming data and stored parities.  ...  Data entanglement is a novel approach to generate and propagate redundancy across multiple disk nodes in a faulttolerant data store.  ...  Degraded reads Degraded reads are a key attribute to cloud storage performance [4] .  ... 
doi:10.1109/cluster.2015.33 dblp:conf/cluster/GalinanesF15 fatcat:kekdtf7fn5cedjc6dhb24epgni

Gradient echo memory in an ultra-high optical depth cold atomic ensemble

B M Sparkes, J Bernu, M Hosseini, J Geng, Q Glorieux, P A Altin, P K Lam, N P Robins, B C Buchler
2013 New Journal of Physics  
Storage is required because the generation, detection and distillation of entanglement is not deterministic.  ...  A working QR will require two key components: a source of entanglement and a quantum memory to store the entanglement at the nodes [4, 5] .  ... 
doi:10.1088/1367-2630/15/8/085027 fatcat:x5qpbxthx5crzcso65yfvu3uxq
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