The full text is available in the PDF provided.

Careful reviews and meta-analyses have made valuable contributions to understanding the efficacy of psychosocial interventions for cancer patients. An important next step is to determine the mediators that explain the influence of efficacious interventions on outcomes. This systematic review summarizes tests of mediating variables from twenty-two projects conducted from 1989-2010. Although all authors provided some type of rationale for considering particular mediating relationships, the investigations varied widely with respect to the extent to which formal theoretical constructs were tested, the type and goals of the interventions studied, and the broad types of outcomes and potential mediators examined. Although there was some evidence supporting selected mediating relationships, with positive findings often found when mediating variables represented behaviors targeted by an intervention, the findings were mixed. Expanding the focus of research to include mechanisms in psychosocial oncology intervention research is necessary for providing a unified picture of how mediating relationships may be operating in this field.

Psycho-OncologyVolume 21, Issue 1 p. e1-e2 Book Review Handbook of Psychotherapy in Cancer Care. Edited by Maggie Watson and David Kissane. John Wiley & Sons, Chichester, West Sussex, UK. Price: $57.95 (US), £34.99 (UK). 266pp. ISBN: 978-0470660034 Anne Moyer PhD, Anne Moyer PhD Department of Psychology, Stony Brook University, Stony Brook, NY, USASearch for more papers by this authorMatthew A. Hall BA, Matthew A. Hall BA Department of Psychology, Stony Brook University, Stony Brook, NY, USASearch for more papers by this author Anne Moyer PhD, Anne Moyer PhD Department of Psychology, Stony Brook University, Stony Brook, NY, USASearch for more papers by this authorMatthew A. Hall BA, Matthew A. Hall BA Department of Psychology, Stony Brook University, Stony Brook, NY, USASearch for more papers by this author First published: 03 January 2012 https://doi.org/10.1002/pon.2061Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL No abstract is available for this article. Volume21, Issue1January 2012Pages e1-e2 RelatedInformation

Future quantum optical networks will require the ability to route entangled photons at high speeds, with minimal loss and added in-band noise, and—most importantly—without disturbing the photons' quantum state. Here we present an all-optical switch that fulfills these requirements and characterize its performance at the single-photon level. It exhibits a 200 ps switching window, 120 : 1 contrast, 1.5 dB loss, and induces no measurable degradation in the switched photons' entangled-state fidelity (<0.002). As a proof-of-principle demonstration of its capability, we use the switch to demultiplex a single quantum channel from a dual-channel, time-division-multiplexed entangled photon stream. Furthermore, because this type of switch couples the temporal and spatial degrees of freedom, it provides an important new tool with which to encode multiple-qubit quantum states on a single photon.

We present a dual-in, dual-out, optical-fiber-based entangled photon switch, capable of 30-ps operation. It improves upon a slower, three-port design and exhibits low-loss, low signal-band noise, and maintains the transmitted photons’ quantum state.

To deploy and operate a quantum network which utilizes existing telecommunications infrastructure, it is necessary to be able to route entangled photons at high speeds, with minimal loss and signal-band noise, and-most importantly-without disturbing the photons' quantum state. Here we present a switch which fulfills these requirements and characterize its performance at the single photon level. Furthermore, because this type of switch couples the temporal and spatial degrees of freedom, it provides an important new tool with which to encode multiple-qubit states in a single photon. As a proof-of-principle demonstration of this capability, we demultiplex a single quantum channel from a dual-channel, time-division-multiplexed entangled photon stream, effectively performing a controlled-bit-flip on a two-qubit subspace of a five-qubit, two-photon state.

We present a dual-in, dual-out, all-optical, fiber-based entangled photon switch, capable of 10-GHz operation. It improves upon a slower, three-port design which exhibits low-loss, low signal-band noise, and does not disturb the transmitted photons' quantum state.

We discuss O-band entangled photon pair sources and entangled photon switching technologies and their application to quantum communications and quantum information processing.

We present a high-speed all-optical switch for use in quantum information processing. The demonstrated implementation is capable of operating on 1310-nm single photons. Its performance is characterized using polarization-entangled photon pairs.

We have constructed and experimentally characterized what we believe to be the first fiber-based source of degenerate polarization-entangled photon pairs in the telecommunication band. Our source design utilizes bichromatic pump pulses and an optical-fiber Sagnac loop aligned to deterministically separate degenerate photon pairs at a central wavelength. The source exhibits 0.997+/-0.006 fidelity with a maximally entangled state, measured using quantum state tomography. When reconfigured to produce identical photon pairs, the source exhibits a Hong-Ou-Mandel interference visibility of 0.97+/-0.04.

Quantum communication entails transmission of quantum information over a classical or quantum channel, in free space or in optical fiber. This talk will focus on development of resources for efficiently implementing quantum optical communications over the standard telecom infrastructure.

We build and characterize a fiber-based source of 1310-nm polarization entanglement with the highest reported fidelity to a maximally entangled state, 99.6% ± 0.15% as characterized via coincidence basis tomography.

A growing number of quantum communication protocols require entanglement distribution among remote parties, which is best accomplished by exploiting the mature technology and extensive infrastructure of low-loss optical fiber. For this reason, a practical source of entangled photons must be drop-in compatible with optical fiber networks. Here we demonstrate such a source for the first time, in which the nonlinearity of standard single-mode fiber is utilized to yield entangled photon pairs in the 1310-nm O-band. Using an ultra-stable design, we produce polarization entanglement with 98.0% +/- 0.5% fidelity to a maximally entangled state as characterized via coincidence-basis tomography. To demonstrate the source's drop-in capability, we transmit one photon from each entangled pair through a telecommunications-grade optical amplifier set to boost classical 1550-nm (C-band) communication signals. We verify that the photon pairs experience no measurable decoherence upon passing through the active amplifier (the output state's fidelity with a maximally entangled state is 98.4% +/- 1.4%).

Quantum states and gates in the 1.5-micron wavelength range can leverage the existing telecommunications infrastructure for communications-based quantum information processing. We present the latest results on characterization of a telecommunications-wavelength linear optics quantum controlled-NOT gate. Article not available.

We demonstrate the generation of high-quality entangled photon pairs in the 1310-nm O-band. Using an ultra-stable source design, we produce polarization entanglement with 97.5% fidelity as characterized via coincidence basis tomography.

The quantum controlled-not gate is an example of the maximally entangling gate, which is a broad class of operations that are necessary for scalable linear optics quantum computation. Here, we characterize a telecommunications-wavelength (1550 nm) quantum controlled- not gate, and for the first time, experimentally bound its process fidelity by measuring its operation in two complementary polarization bases. The gate's final process fidelity F is given by 91% ¿ F ¿ 95%.

We experimentally characterize a linear optics, telecom-band quantum controlled-NOT gate using a fiber-based source of degenerate photon pairs, and bound its process fidelity to 0.907 <= F(p) <= 0.948. (C) 2009 Optical Society of America