Pub Date : 2003-06-06DOI: 10.1109/QELS.2003.238205
J. Altepeter, D. Branning, E. Jeffrey, C. Wei, P. Kwiat, R. Thew, J. O'Brien, M. Nielsen, A.G. White
Quantum process tomography allows complete and precise characterization of a quantum operation. We report quantum process tomography of unitary, decohering, and partially polarizing operations using single-qubit, maximally entangled, and non-entangled input states.
{"title":"Single-qubit, entanglement-assisted and ancilla-assisted quantum process tomography","authors":"J. Altepeter, D. Branning, E. Jeffrey, C. Wei, P. Kwiat, R. Thew, J. O'Brien, M. Nielsen, A.G. White","doi":"10.1109/QELS.2003.238205","DOIUrl":"https://doi.org/10.1109/QELS.2003.238205","url":null,"abstract":"Quantum process tomography allows complete and precise characterization of a quantum operation. We report quantum process tomography of unitary, decohering, and partially polarizing operations using single-qubit, maximally entangled, and non-entangled input states.","PeriodicalId":20418,"journal":{"name":"Postconference Digest Quantum Electronics and Laser Science, 2003. QELS.","volume":"265 1","pages":"3 pp.-"},"PeriodicalIF":0.0,"publicationDate":"2003-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77021129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2003-06-06DOI: 10.1109/QELS.2003.238523
I. Magnúsdóttir, S. Bischo, J. Mørk, Alexander V. Uskov
We present calculations of Auger carrier capture processes into self-assembled quantum dots. A strong dependence of the Auger capture rate on the size and geometry of the quantum dots is demonstrated.
{"title":"Geometry dependence of Auger carrier capture rates into self-assembled quantum dots","authors":"I. Magnúsdóttir, S. Bischo, J. Mørk, Alexander V. Uskov","doi":"10.1109/QELS.2003.238523","DOIUrl":"https://doi.org/10.1109/QELS.2003.238523","url":null,"abstract":"We present calculations of Auger carrier capture processes into self-assembled quantum dots. A strong dependence of the Auger capture rate on the size and geometry of the quantum dots is demonstrated.","PeriodicalId":20418,"journal":{"name":"Postconference Digest Quantum Electronics and Laser Science, 2003. QELS.","volume":"74 1","pages":"2 pp.-"},"PeriodicalIF":0.0,"publicationDate":"2003-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75001050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2003-06-06DOI: 10.1109/QELS.2003.238331
E. Gershgoren, R. Bartels, J. Fourkas, R. Tobey, M. Murnane, H. Kapteyn
Using a broadband femtosecond laser and simple optics, we demonstrate narrow-bandwidth tunable selective vibrational excitation in liquids. The resolution obtained is 80 times higher than the laser bandwidth-the highest obtained from a femtosecond laser to date.
{"title":"Simplified setup for high-resolution spectroscopy using ultrashort pulses","authors":"E. Gershgoren, R. Bartels, J. Fourkas, R. Tobey, M. Murnane, H. Kapteyn","doi":"10.1109/QELS.2003.238331","DOIUrl":"https://doi.org/10.1109/QELS.2003.238331","url":null,"abstract":"Using a broadband femtosecond laser and simple optics, we demonstrate narrow-bandwidth tunable selective vibrational excitation in liquids. The resolution obtained is 80 times higher than the laser bandwidth-the highest obtained from a femtosecond laser to date.","PeriodicalId":20418,"journal":{"name":"Postconference Digest Quantum Electronics and Laser Science, 2003. QELS.","volume":"59 1","pages":"2 pp.-"},"PeriodicalIF":0.0,"publicationDate":"2003-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74763205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2003-06-06DOI: 10.1109/QELS.2003.238174
C. Hoyt, W. Patterson, M. Hasselbeck, M. Sheik-Bahae, R. Epstein, J. Thiede, D. Seletskiy
Thulium-doped glass is cooled 24 K below ambient by arranging a Brewster-cut sample in a multiple-pass pump geometry. Modelling based on new spectroscopy data predicts the feasibility of achieving cryogenic temperatures.
{"title":"Laser cooling thulium-doped glass by 24K from room temperature","authors":"C. Hoyt, W. Patterson, M. Hasselbeck, M. Sheik-Bahae, R. Epstein, J. Thiede, D. Seletskiy","doi":"10.1109/QELS.2003.238174","DOIUrl":"https://doi.org/10.1109/QELS.2003.238174","url":null,"abstract":"Thulium-doped glass is cooled 24 K below ambient by arranging a Brewster-cut sample in a multiple-pass pump geometry. Modelling based on new spectroscopy data predicts the feasibility of achieving cryogenic temperatures.","PeriodicalId":20418,"journal":{"name":"Postconference Digest Quantum Electronics and Laser Science, 2003. QELS.","volume":"3 1","pages":"790-795"},"PeriodicalIF":0.0,"publicationDate":"2003-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72995527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2003-06-06DOI: 10.1109/QELS.2003.238035
M. J. Fitch, M. Donegan, B. Jacobs, T. Pittman, J. Franson
High efficiency single-photon detectors are needed for many applications including quantum cryptography and linear-optics quantum computing. We present experimental results showing improved detection efficiency of silicon avalanche photodiodes by reducing reflective losses.
{"title":"Improved single-photon detector performance","authors":"M. J. Fitch, M. Donegan, B. Jacobs, T. Pittman, J. Franson","doi":"10.1109/QELS.2003.238035","DOIUrl":"https://doi.org/10.1109/QELS.2003.238035","url":null,"abstract":"High efficiency single-photon detectors are needed for many applications including quantum cryptography and linear-optics quantum computing. We present experimental results showing improved detection efficiency of silicon avalanche photodiodes by reducing reflective losses.","PeriodicalId":20418,"journal":{"name":"Postconference Digest Quantum Electronics and Laser Science, 2003. QELS.","volume":"42 1","pages":"2 pp.-"},"PeriodicalIF":0.0,"publicationDate":"2003-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73262405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2003-06-06DOI: 10.1109/QELS.2003.238123
G. Chern, Kung-Hsuan Lin, Huang. Yue-Kai, Chi‐Kuang Sun
Second harmonic coherent acoustic phonon oscillations were generated in strained InGaN/GaN multiple quantum wells using an optical coherent control technique. This demonstration leads to the nano acoustic waveform synthesis based on optical coherent controls.
{"title":"Nano-acoustic waveform synthesis and second harmonic generation of coherent acoustic phonon oscillations using optical coherent control","authors":"G. Chern, Kung-Hsuan Lin, Huang. Yue-Kai, Chi‐Kuang Sun","doi":"10.1109/QELS.2003.238123","DOIUrl":"https://doi.org/10.1109/QELS.2003.238123","url":null,"abstract":"Second harmonic coherent acoustic phonon oscillations were generated in strained InGaN/GaN multiple quantum wells using an optical coherent control technique. This demonstration leads to the nano acoustic waveform synthesis based on optical coherent controls.","PeriodicalId":20418,"journal":{"name":"Postconference Digest Quantum Electronics and Laser Science, 2003. QELS.","volume":"9 1","pages":"3 pp.-"},"PeriodicalIF":0.0,"publicationDate":"2003-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74416966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2003-06-06DOI: 10.1109/QELS.2003.237974
N. Lepeshkin, G. Piredda, A. Schweinsberg, R. Boyd
We report measurements of the cubic optical susceptibility of copper at the interband transition threshold. Both real and imaginary parts of the susceptibility are determined from nonlinear transmission and reflection experiments with a copper/silica composite sample irradiated by picosecond laser pulses.
{"title":"Nonlinear optical properties of noble metals at the interband transition threshold","authors":"N. Lepeshkin, G. Piredda, A. Schweinsberg, R. Boyd","doi":"10.1109/QELS.2003.237974","DOIUrl":"https://doi.org/10.1109/QELS.2003.237974","url":null,"abstract":"We report measurements of the cubic optical susceptibility of copper at the interband transition threshold. Both real and imaginary parts of the susceptibility are determined from nonlinear transmission and reflection experiments with a copper/silica composite sample irradiated by picosecond laser pulses.","PeriodicalId":20418,"journal":{"name":"Postconference Digest Quantum Electronics and Laser Science, 2003. QELS.","volume":"193 1","pages":"2 pp.-"},"PeriodicalIF":0.0,"publicationDate":"2003-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72841547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2003-06-06DOI: 10.1109/QELS.2003.237813
C. Poitras, M. Lipson, M. Hahn, H. Du, T. Krauss
We demonstrate an enhancement of the spontaneous emission from colloidal quantum dots embedded in a half-wavelength 1D cavity. Compared to free space, the emission of the dots is enhanced by a factor of 2.7.
我们证明了嵌入在半波长一维腔中的胶体量子点的自发发射增强。与自由空间相比，点的发射增强了2.7倍。
{"title":"Enhanced spontaneous emission from colloidal quantum dots embedded in a monolithic microcavity","authors":"C. Poitras, M. Lipson, M. Hahn, H. Du, T. Krauss","doi":"10.1109/QELS.2003.237813","DOIUrl":"https://doi.org/10.1109/QELS.2003.237813","url":null,"abstract":"We demonstrate an enhancement of the spontaneous emission from colloidal quantum dots embedded in a half-wavelength 1D cavity. Compared to free space, the emission of the dots is enhanced by a factor of 2.7.","PeriodicalId":20418,"journal":{"name":"Postconference Digest Quantum Electronics and Laser Science, 2003. QELS.","volume":"30 1","pages":"3 pp.-"},"PeriodicalIF":0.0,"publicationDate":"2003-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73403461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2003-06-06DOI: 10.1109/QELS.2003.237954
M. Noginov, G. Zhu, S. Williams, A. Burin
In NdSc/sub 3/(BO/sub 3/)/sub 4/ random laser, we experimentally studied the dependence of the threshold, slope efficiency, and effective photon residence time on the size of powder particles. Optimum lasing conditions are found at medium particle sizes.
{"title":"Dependence of the NdSc/sub 3/(BO/sub 3/)/sub 4/ random laser output parameters on the particle size","authors":"M. Noginov, G. Zhu, S. Williams, A. Burin","doi":"10.1109/QELS.2003.237954","DOIUrl":"https://doi.org/10.1109/QELS.2003.237954","url":null,"abstract":"In NdSc/sub 3/(BO/sub 3/)/sub 4/ random laser, we experimentally studied the dependence of the threshold, slope efficiency, and effective photon residence time on the size of powder particles. Optimum lasing conditions are found at medium particle sizes.","PeriodicalId":20418,"journal":{"name":"Postconference Digest Quantum Electronics and Laser Science, 2003. QELS.","volume":"33 1","pages":"2 pp.-"},"PeriodicalIF":0.0,"publicationDate":"2003-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74050479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2003-06-06DOI: 10.1109/QELS.2003.238111
M. S. Bigelow, N. Lepeshkin, R. Boyd
We observe superluminal light propagation in an alexandrite crystal. Negative group velocities result from a narrow anti-hole in the homogeneously broadened absorption spectrum. The anti-hole is formed by coherent population oscillations in an inverse-saturable absorber.
{"title":"Observation of superluminal pulse propagation in alexandrite","authors":"M. S. Bigelow, N. Lepeshkin, R. Boyd","doi":"10.1109/QELS.2003.238111","DOIUrl":"https://doi.org/10.1109/QELS.2003.238111","url":null,"abstract":"We observe superluminal light propagation in an alexandrite crystal. Negative group velocities result from a narrow anti-hole in the homogeneously broadened absorption spectrum. The anti-hole is formed by coherent population oscillations in an inverse-saturable absorber.","PeriodicalId":20418,"journal":{"name":"Postconference Digest Quantum Electronics and Laser Science, 2003. QELS.","volume":"100 1","pages":"2 pp.-"},"PeriodicalIF":0.0,"publicationDate":"2003-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79287471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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