Qkd PowerPoint PPT Presentations

Currently: 67km, 1000 bits/second. Commercially available: Id Quantique, 2002. Next lectures Tomorrow: quantum algorithms for factoring. Friday: quantum coin flipping.

From basics to quantum key distribution. What is quantum computation? ... Quantum: secure if quantum mechanics valid [Bennett, Brassard, 1984] ...

... OIT, and PREA. Members of my group Faculty: Hoi-Kwong Lo Postdocs: Kai Chen Kiyoshi Tamaki * Bing Qi QUESTION: Is there a tradeoff ...

1. Decoy State Quantum Key Distribution (QKD) Hoi-Kwong Lo ... Bennett and Brassard's scheme (BB84) ASSSUMPTIONS: Source: Emits perfect single photons. ...

Title: PowerPoint Presentation Author: hoi_kwong Last modified by: Hoi-Kwong Lo Created Date: 1/18/2002 4:39:54 PM Document presentation format: On-screen Show

Suppose photon has polarisation at angle q to a horizontal filter. ... They would both have the same polarisation so the security here would be broken. ...

Authenticated QKD protocol using one-time ID. GSIS / CIST. Hwa Yean Lee. 2005. 2. 21 ... Miloslav Dusek, Ondrej Haderka, Martin Hendrych, and Robert Myska, PRA, ...

To detect the effects of Eve, Alice selects a random subset of the ... Alice announces privacy amplification information to reduce Eve's information to zero. ...

JPL has capability to design and fabricate better SSPDs than anyone else. Motivation ... Improve coupling with E-beam fabricated diffractive optical element ...

Better Name Quantum Key Distribution (QKD) It's NOT a new ... Paper by Charles Bennett and Gilles Brassard in 1984 is the basis for QKD protocol BB84. ...

According to MIT Technology ... The perceived beauty of QKD: QKD solves the problem of key distribution. ... Security by experts vs security by enthusiasts. ...

In 1984 Bennett and Brassard proposed a protocol using quantum mechanics to ... Bennett and Brassard-First QKD protocol. Ekert and 1992-Bennett-New QKD protocol. ...

QKD in infinite dimensional Hilbert space can make use of both coherent and entangled states Development of deterministic protocol in infinite dimensional Hilbert ...

Center for Quantum Information and Quantum Control (CQIQC), University of Toronto ... C.H. Bennett and G. Brassard, Proc. IEEE Int. Conf. ...

Quantum Channel University of ... Remind dense coding protocol! virtual entanglement Two-way quantum channel for QubitKD was put forward by K. Bostrom & T ...

... ready for practical application. Make physical devices ready for practical application. Provide necessary interfaces for the integration into existing applications ...

Quantum Cryptography 3 ...

Conclusion Quantum cryptography means just the exchange of keys Actual transmission of data is done ... Physikalische Bl tter 55, 25 (1999) Nature Photonics 4 ...

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Quantum Cryptography Nick Papanikolaou Introduction Quantum cryptography is the single most successful application of Quantum Computing/Information Theory.

Quantum Cryptography Nick Papanikolaou Third Year CSE Student npapanikolaou@iee.org http://www.dcs.warwick.ac.uk/~esvbb Introduction Quantum cryptography is the ...

List of Most Frequently Asked Questions. 1. What is quantum ... ( Brassard) 15 ... Gilles Brassard and Claude Crepeau. Problems: a) Real channels ...

... the photons, such as setting up a photo detector to read the code, makes the ... A group in Europe recently made the first quantum encrypted bank transaction. ...

List of most frequently asked questions. 1. What is quantum ... ( Brassard) 15 ... Gilles Brassard and Claude Crepeau. Problems: a) Real channels ...

an IBM Fellow at IBM Research. Gilles Brassard. Founding Director, Institut transdiscip-linaire d'informatique quantique (INTRIQ) ...

Coherent States of Atomic Matter. Atom Laser. Ion Trap. Atomic Clock. Coherent Quantum Electronics. Artificial Atoms. Excitons Artificial Atoms II ...

List of most frequently asked questions. 1. What is quantum ... ( Brassard) 15 ... Gilles Brassard and Claude Crepeau. Problems: a) Real channels ...

Big commercial market. Short propagation delay. Polarization ... Virtual journal, more meetings focused on single photon detectors. Future, Summary (day ? ...

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Quantum Cryptography Nick Papanikolaou nikos@dcs.warwick.ac.uk ... Measurement [2] If a photon is measured using the wrong polarization angle for the crystal, ...

Quantum Cryptography Nick Papanikolaou nikos@dcs.warwick.ac.uk The Art of Concealment To exchange sensitive information, encryption is used Encryption schemes in use ...

Alice generates entangled photons: orthogonal or diagonal. ... 50% chance of right angles, if wrong, 50% chance that Bob reads it right anyways. ...

Quantum cryptography is the single most successful application of Quantum ... A calcite crystal can be used to recover the bits encoded into a stream of photons. ...

What is quantum computing? Exploiting the strange phenomena in quantum mechanics to process information. Quantum computers can be in a superposition of several states ...

Title: Kvantekryptografi med fotoner i optiske fibre Author: Dag Roar Hjelme Last modified by: Vadim Makarov Created Date: 4/12/1999 8:58:22 AM Document presentation ...

From probabilistic to deterministic quantum cryptography. From qubit to ... Lemma: Optimal Eve's incoherent attack consists in. a balanced one for which x=x' ...

Attacks via optical loopholes. Norwegian University of Science and Technology. Trondheim ... Evanescent wave technology: Removed cladding Variable coupler ...

Quanum computing. What is quantum computation? New model of computing ... Graph automorphism problem. So the hidden subgroup of is the automorphism group of G ...

... Key Distribution The Science of Secret Communications LA ... monitor the quantum channel ... method of authentication for public channel. Biometrics? ...

DOCUMENT #: GSC15-PLEN-24 FOR: Presentation SOURCE: ETSI AGENDA ITEM: PLEN 6.3 CONTACT(S): Charles Brookson, OCG Security Chair Security activities in ETSI

Quantum correlations and device-independent quantum information protocols Antonio Ac n N. Brunner, N. Gisin, Ll. Masanes, S. Massar, M. Navascu s, S. Pironio, V ...

A Single Photon Source for Photon-atom Interaction Xingxing Xing Centre for Quantum Info. & Quantum Control, Dept. of Physics, Univ. of Toronto

QAP SP5 Theory. Serge Massar. Publications for Year 1. 115 submitted/published ... Serge Massar. Meetings. Poincar Semester (Paris) QIP Conference (Paris) QAP ...

The Art of Concealment. To exchange sensitive information, encryption is used. Encryption schemes in use today are under serious threat by quantum computers ...

Deterministic Quantum Teleportation with Atoms

Stefano Mancini

Unconditional Security of the Bennett 1992 quantum key-distribution protocol over ... An ideal photon counter that discriminates single photon one hand and multi ...

Alice informs Bob which bases were correct. Alice and Bob discard the data from ... Eve is able to learn a constant fraction of the bits by splitting a pulse ...

Heart Sounds Mechanical Correlations. 7. Heart Sounds Auscultation Areas. 8 ... Time-delay estimation of propagating heart pulse pressure wave is useful for ...

Norsk kryptoseminar, 17-18. oktober 2002. NTNU, Trondheim Quantum Cryptography Vadim Makarov and Dag R. Hjelme Institutt for fysikalsk elektronikk NTNU

Cryptography In the Bounded Quantum-Storage Model Ivan Damg rd, Louis Salvail, Christian Schaffner BRICS, University of rhus, DK Serge Fehr CWI, Amsterdam, NL

Requires secure channel for key distribution ... (microphotograph) Trondheim 2003. NTNU. Real-time phase tracking. in the interferometer ...

Documents for the rechartering discussion. Getting the sense of the group ... ECDH erratum draft making slow progress. draft-solinas-rfc4753bis-00. 2 Discusses ...

Title: Slayt 1 Author: Ergun Gumus Last modified by: Erg n Created Date: 12/18/2005 5:46:58 PM Document presentation format: Ekran G sterisi (4:3)

BB84 Quantum Key Distribution Alice chooses random bitstrings a and b each of length (4+ )n, Alice encodes each bit ai as {|0,|1} if bi=0 and as {|+,|-} if bi=1,

For some maps f, it can be impossible (information-theoretically) to determine k, ... Protocol defines map k Uk (unitary) Alice's private key k. Public key (I Uk) ...