ابتكر باحثون من جامعتي كيوتو وهيروشيما تقنية جديدة لتحديد حالات دبليو (W states)، وهي شكل معقد من التشابك الكمومي. وقد يدعم هذا التقدم التطور في مجالي الحوسبة والاتصالات الكمومية.
أثبت فريق بقيادة شيجيكي تاكيوتشي كفاءة هذه الطريقة باستخدام ثلاثة فوتونات في دائرة بصرية مستقرة. يقوم الجهاز بإجراء تحويل فورييه الكمومي بناءً على تناظر الإزاحة الدوري لحالات دبليو. وتعمل التقنية على تمييز حالات دبليو المختلفة المكونة من ثلاثة فوتونات في قياس واحد دون الحاجة إلى تعديلات مكثفة أثناء التشغيل.
من إعداد الذكاء الاصطناعي صورة مولدة بواسطة الذكاء الاصطناعي
Physicists at MIT have developed a new microscope using terahertz light to directly observe hidden quantum vibrations inside a superconducting material for the first time. The device compresses terahertz light to overcome its wavelength limitations, revealing frictionless electron flows in BSCCO. This breakthrough could advance understanding of superconductivity and terahertz-based communications.
An international team of researchers has achieved a milestone in quantum communication by teleporting the polarization state of a single photon between two separate quantum dots over a 270-meter open-air link. The experiment, conducted at Sapienza University of Rome, demonstrates the potential for quantum relays in future quantum networks. The findings were published in Nature Communications.
من إعداد الذكاء الاصطناعي
Researchers from the University of the Witwatersrand in South Africa and Huzhou University have discovered hidden topological structures in entangled photons, reaching up to 48 dimensions. These patterns emerge from the orbital angular momentum of light produced via spontaneous parametric downconversion. The findings, published in Nature Communications, suggest new ways to encode quantum information.
Scientists at California Polytechnic State University have discovered new forms of quantum matter by varying magnetic fields over time. The breakthrough, detailed in Physical Review B, shows that time-dependent control can produce stable quantum states without static equivalents. This could advance quantum computing by making systems more resistant to errors.
من إعداد الذكاء الاصطناعي
For the first time, researchers have demonstrated light behaving like the quantum hall effect, a phenomenon previously observed only in electrons. Photons now drift sideways in quantized steps determined by fundamental constants. This breakthrough could enhance precision measurements and advance quantum photonic technologies.
An international team of researchers has discovered that quantum systems can appear memoryless from one viewpoint while retaining memory from another. The finding, based on Schrödinger and Heisenberg pictures, reveals hidden memory effects in quantum dynamics. This could impact the design of quantum technologies.
من إعداد الذكاء الاصطناعي
Qunnect, a Brooklyn-based company, has created technology to share quantum-entangled photons for secure communication networks. The firm recently achieved entanglement swapping over 17.6 kilometers of fiber-optic cables between Brooklyn and Manhattan. This advancement supports the development of an unhackable quantum internet.