Optimal photons for quantum-information processing Export

@article{citeulike:3909189, abstract = {Photonic quantum-information processing schemes; such as linear optics quantum computing; and other experiments relying on single-photon interference; inherently require complete photon indistinguishability to enable the desired photonic interactions to take place. Mode-mismatch is the dominant cause of photon distinguishability in optical circuits. Here we study the effects of photon wave-packet shape on tolerance against the effects of mode mismatch in linear optical circuits; and show that Gaussian distributed photons with large bandwidth are optimal. The result is general and holds for arbitrary linear optical circuits; including ones which allow for postselection and classical feed forward. Our findings indicate that some single photon sources; frequently cited for their potential application to quantum-information processing; may in fact be suboptimal for such applications.}, author = {Rohde, Peter P. and Ralph, Timothy C. and Nielsen, Michael A.}, citeulike-article-id = {3909189}, citeulike-linkout-0 = {http://dx.doi.org/10.1103/PhysRevA.72.052332}, citeulike-linkout-1 = {http://link.aps.org/abstract/PRA/v72/i5/e052332}, citeulike-linkout-2 = {http://link.aps.org/pdf/PRA/v72/i5/e052332}, day = {28}, doi = {10.1103/PhysRevA.72.052332}, journal = {Physical Review A}, keywords = {qip}, month = {Nov}, number = {5}, pages = {052332+}, posted-at = {2009-08-14 17:03:43}, priority = {2}, publisher = {American Physical Society}, title = {Optimal photons for quantum-information processing}, url = {http://dx.doi.org/10.1103/PhysRevA.72.052332}, volume = {72}, year = {2005} }

TY - JOUR ID - citeulike:3909189 L3 - citeulike-article-id:3909189 N2 - Photonic quantum-information processing schemes; such as linear optics quantum computing; and other experiments relying on single-photon interference; inherently require complete photon indistinguishability to enable the desired photonic interactions to take place. Mode-mismatch is the dominant cause of photon distinguishability in optical circuits. Here we study the effects of photon wave-packet shape on tolerance against the effects of mode mismatch in linear optical circuits; and show that Gaussian distributed photons with large bandwidth are optimal. The result is general and holds for arbitrary linear optical circuits; including ones which allow for postselection and classical feed forward. Our findings indicate that some single photon sources; frequently cited for their potential application to quantum-information processing; may in fact be suboptimal for such applications. IS - 5 JF - Physical Review A TI - Optimal photons for quantum-information processing PB - American Physical Society VL - 72 SP - 052332 KW - qip AU - Rohde, Peter AU - Ralph, Timothy AU - Nielsen, Michael PY - 2005/Nov/28/ UR - http://dx.doi.org/10.1103/PhysRevA.72.052332 ER -