摘要:纠缠态的分布是许多量子信息处理协议中至关重要的关键任务。一种常用的量子态分布设置设想在一个位置创建状态,然后通过一些量子通道将其发送到(可能不同的)远程接收器。虽然毫无疑问,也许直观地预料到,纠缠量子态的分布效率低于乘积态,但尚未对这种低效率(即纠缠态和分解态的量子态传输保真度之间的差异)进行彻底的量化。为此,在这项工作中,我们考虑了 n 个独立的振幅衰减通道,它们并行作用,即每个通道局部作用于 n 个量子比特状态的一部分。我们推导出了在初始状态存在纠缠的情况下,最多四个量子比特的乘积态保真度降低的精确分析结果。有趣的是,我们发现真正的多部分纠缠对保真度的影响比双量子比特纠缠更大。我们的结果暗示了这样一个事实:对于更大的 n 量子比特状态,产品状态和纠缠状态之间的平均保真度差异会随着单量子比特保真度的增加而增加,从而使后者成为不太值得信赖的品质因数。
In addition to optimizing and safeguarding the Army's resources, we owe our leaders reliable and timely financial information so that they can make informed business decisions. Providing this information is central to our mission. Receiving an unqualified audit opinion on our financial statements certifies the reliability of our financial information and, hence, remains an Army priority. Over the past year, we have made major strides in achieving this goal. For example, this year's accomplishments include: completion of milestone 3 of our Single Stock Fund implementation; Army-wide deployment of the Defense Property Accountability System; exceeding our goals for improving our accounting processes, including reducing problem disbursements, negative unliquidated obligations and outstanding travel advances and liquidating obligations in appropriations in advance of their cancellation; partnering on and advancing the development of a CFO compliant enterprise resource plan for our Logistics Modernization Program; and, positioning the Army National Guard to move simultaneously with the rest of the Army to the Department of Defense Financial Management Modernization Program's approved architecture.
出席人员: CDR CHRISTIAN BARGER,审判长兼首席调查官 美国海岸警卫队 LCDR STEPHANIE MOORE,调查官 美国海岸警卫队 WILLY PITTMAN,调查员 美国海岸警卫队国家专业中心 (NCOE) LT BRANDON REED,调查官 美国海岸警卫队(记录员) LCDR KATHERINE WARD,律师顾问 美国海岸警卫队 BART BARNUM,主管调查员 国家运输安全委员会 NANCY McATEE,调查员 国家运输安全委员会 利益相关方: MATTHEW PALLAY,律师(代表美国纽约海事服务公司) GINO ZONGHETTI,律师(代表 Ports America) ROBERT O'CONNOR,律师(代表 Grimaldi Deep Sea) JOHN REILLY,律师(代表纽约和新泽西港务局) GARY LIPSHUTZ,第一助理纽瓦克市法律部公司法律顾问(代表纽瓦克市和公共安全部、消防处)
