Photonic Entanglement for a Quantum Repeater
| atmire.migration.oldid | 2297 | |
| dc.contributor.advisor | Tittel, Wolfgang | |
| dc.contributor.author | Jin, Jeongwan | |
| dc.date.accessioned | 2014-07-09T16:48:18Z | |
| dc.date.available | 2014-11-17T08:00:36Z | |
| dc.date.issued | 2014-07-09 | |
| dc.date.submitted | 2014 | en |
| dc.description.abstract | Quantum Key Distribution (QKD) has opened a new avenue for secure communication, by allowing one to distribute a random secret key between two users that are connected through a public channel without revealing information to unauthorized parties. If a message is encrypted with the one time pad (a well-known crytography algorithm) using secret keys created by QKD, then the ciphertext is information-theoretically secure and thus unbreakable for adversaries. Despite its unprecedented security, loss in the physical channel has prevented QKD from being used over distances beyond a few hundred kilometers. Fortunately, quantum repeaters have opened a path for long-distance QKD by providing a means to establish entanglement between distant users. The goal of this thesis has been to develop a source of entangled photon pairs that is suitable for quantum repeaters and then use it to test some of the fundamental building blocks of a quantum repeater : the heralded creation of entangled photons by means of entanglement swapping with properties that allow interfacing with optical quantum memories; the reversible mapping of quantum states from members of entangled photon pairs in and out of solid-state quantum memories; two-photon interference and a Bell state measurement with photons recalled from separate quantum memories. The demonstration of these key ingredients of a quantum repeater constitutes a significant step towards the establishment of entanglement over hundreds of kilometer distance, and hence long-distance QKD. | en_US |
| dc.identifier.citation | Jin, J. (2014). Photonic Entanglement for a Quantum Repeater (Doctoral thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/27340 | en_US |
| dc.identifier.doi | http://dx.doi.org/10.11575/PRISM/27340 | |
| dc.identifier.uri | http://hdl.handle.net/11023/1608 | |
| dc.language.iso | eng | |
| dc.publisher.faculty | Graduate Studies | |
| dc.publisher.institution | University of Calgary | en |
| dc.publisher.place | Calgary | en |
| dc.rights | University of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission. | |
| dc.subject | Information Science | |
| dc.subject.classification | Quantum Repeater | en_US |
| dc.title | Photonic Entanglement for a Quantum Repeater | |
| dc.type | doctoral thesis | |
| thesis.degree.discipline | Physics and Astronomy | |
| thesis.degree.grantor | University of Calgary | |
| thesis.degree.name | Doctor of Philosophy (PhD) | |
| ucalgary.item.requestcopy | true |