{"title":"量子计算机上的 Scully-Drühl 型量子擦除器演示","authors":"Bo-Hung Chen, Dah-Wei Chiou, Hsiu-Chuan Hsu","doi":"arxiv-2409.08053","DOIUrl":null,"url":null,"abstract":"We present a novel quantum circuit that genuinely implements the\nScully-Dr\\\"uhl-type delayed-choice quantum eraser, where the two recorders of\nthe which-way information directly interact with the signal qubit and remain\nspatially separated. Experiments conducted on IBM Quantum and IonQ processors\ndemonstrate that the recovery of interference patterns, to varying degrees,\naligns closely with theoretical predictions, despite the presence of systematic\nerrors. This quantum circuit-based approach, more manageable and versatile than\ntraditional optical experiments, facilitates arbitrary adjustment of the\nerasure and enables a true random choice in a genuine delayed-choice manner. On\nthe IBM Quantum platform, delay gates can be employed to further defer the\nrandom choice, thereby amplifying the retrocausal effect. Since gate operations\nare executed sequentially in time, the system does not have any involvement of\nrandom choice until after the signal qubit has been measured, therefore\neliminating any potential philosophical loopholes regarding retrocausality that\nmight exist in other experimental setups. Remarkably, quantum erasure is\nachieved with delay times up to $\\sim1\\,\\mu\\text{s}$ without noticeable\ndecoherence, a feat challenging to replicate in optical setups.","PeriodicalId":501226,"journal":{"name":"arXiv - PHYS - Quantum Physics","volume":"17 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Demonstration of Scully-Drühl-type quantum erasers on quantum computers\",\"authors\":\"Bo-Hung Chen, Dah-Wei Chiou, Hsiu-Chuan Hsu\",\"doi\":\"arxiv-2409.08053\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We present a novel quantum circuit that genuinely implements the\\nScully-Dr\\\\\\\"uhl-type delayed-choice quantum eraser, where the two recorders of\\nthe which-way information directly interact with the signal qubit and remain\\nspatially separated. Experiments conducted on IBM Quantum and IonQ processors\\ndemonstrate that the recovery of interference patterns, to varying degrees,\\naligns closely with theoretical predictions, despite the presence of systematic\\nerrors. This quantum circuit-based approach, more manageable and versatile than\\ntraditional optical experiments, facilitates arbitrary adjustment of the\\nerasure and enables a true random choice in a genuine delayed-choice manner. On\\nthe IBM Quantum platform, delay gates can be employed to further defer the\\nrandom choice, thereby amplifying the retrocausal effect. Since gate operations\\nare executed sequentially in time, the system does not have any involvement of\\nrandom choice until after the signal qubit has been measured, therefore\\neliminating any potential philosophical loopholes regarding retrocausality that\\nmight exist in other experimental setups. Remarkably, quantum erasure is\\nachieved with delay times up to $\\\\sim1\\\\,\\\\mu\\\\text{s}$ without noticeable\\ndecoherence, a feat challenging to replicate in optical setups.\",\"PeriodicalId\":501226,\"journal\":{\"name\":\"arXiv - PHYS - Quantum Physics\",\"volume\":\"17 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-09-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"arXiv - PHYS - Quantum Physics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/arxiv-2409.08053\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"arXiv - PHYS - Quantum Physics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/arxiv-2409.08053","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
我们提出了一种新型量子电路,它真正实现了斯cully-Dr\"uhl 型延迟选择量子擦除器,其中两个方向信息记录器直接与信号量子比特相互作用,并保持空间上的分离。在 IBM 量子和 IonQ 处理器上进行的实验表明,尽管存在系统误差,但干扰模式的恢复在不同程度上与理论预测非常吻合。这种基于量子电路的方法比传统的光学实验更易于管理,用途更广,便于任意调整测量值,并能以真正的延迟选择方式实现真正的随机选择。在 IBM 量子平台上,可以使用延迟门来进一步延迟随机选择,从而放大回溯效应。由于门操作是在时间上按顺序执行的,因此系统在测量信号量子比特之前不会涉及任何随机选择,从而消除了其他实验装置中可能存在的有关逆因性的潜在哲学漏洞。值得注意的是,量子擦除的延迟时间可达$\sim1\\mu\text{s}$,而不会注意到相干性,这在光学装置中是难以复制的。
Demonstration of Scully-Drühl-type quantum erasers on quantum computers
We present a novel quantum circuit that genuinely implements the
Scully-Dr\"uhl-type delayed-choice quantum eraser, where the two recorders of
the which-way information directly interact with the signal qubit and remain
spatially separated. Experiments conducted on IBM Quantum and IonQ processors
demonstrate that the recovery of interference patterns, to varying degrees,
aligns closely with theoretical predictions, despite the presence of systematic
errors. This quantum circuit-based approach, more manageable and versatile than
traditional optical experiments, facilitates arbitrary adjustment of the
erasure and enables a true random choice in a genuine delayed-choice manner. On
the IBM Quantum platform, delay gates can be employed to further defer the
random choice, thereby amplifying the retrocausal effect. Since gate operations
are executed sequentially in time, the system does not have any involvement of
random choice until after the signal qubit has been measured, therefore
eliminating any potential philosophical loopholes regarding retrocausality that
might exist in other experimental setups. Remarkably, quantum erasure is
achieved with delay times up to $\sim1\,\mu\text{s}$ without noticeable
decoherence, a feat challenging to replicate in optical setups.