我们在AlGaAs/GaAs二维电子气中制作了一个依赖于窄电子通道光电导增益的单光子探测器。假设电子通道是一维的，光诱导电导在量子电导2 e $^{2}$ /h的倍数处具有平台。叠加在这些宽的电导平台上的是与产生单个光载流子的单光子吸收事件相关联的许多尖锐的、小的电导台阶。这种类型的光电导探测器可以测量单个光子，同时安全地存储和保护其光载流子的自旋自由度。该函数对于允许量子信息的远距离隐形传态的量子中继器是有价值的。
英文摘要：
We have made a single-photon detector that relies on photoconductive gain in a narrow electron channel in an AlGaAs/GaAs 2-dimensional electron gas. Given that the electron channel is 1-dimensional, the photo-induced conductance has plateaus at multiples of the quantum conductance 2e$^{2}$/h. Super-imposed on these broad conductance plateaus are many sharp, small, conductance steps associated with single-photon absorption events that produce individual photo-carriers. This type of photoconductive detector could measure a single photon, while safely storing and protecting the spin degree of freedom of its photo-carrier. This function is valuable for a quantum repeater that would allow very long distance teleportation of quantum information.
(Noncanonical) field quantization by means of a single harmonic oscillator
本文是quant-ph/9912102的扩展。用双光子自发发射和黑体辐射对新框架进行了测试。新的影响相当微妙。双光子发射的概率由几个项的乘积组成：一个项与标准量子光学中的相同，其余项形式上类似于探测器的低效率（这里来自非平凡的真空结构）。对于T T_{critical}，黑体分布与普朗克定律是不可区分< T_{critical} but for T>的，分布的最大值降低并向更高的频率移动。T_{critical}是原则上应该可观察的参数。不需要算符的正规序，真空能是非零但有限的。真空由振子的基态所张成的子空间表示，并且不等价于GNS构造的循环向量。更详细地讨论了非CCR代数。
Analytic properties of cross-click operators in passive multi-basis photodetection: monotonicity, exact convergence rates, and dimension reduction for quantum key distribution
