A research team led by National Tsing Hua University Department of Physics and Center for Quantum Science and Technology professor Chuu Chih-sung (褚志崧) has developed Taiwan’s first and the world’s smallest quantum computer, using a single photon, the university said yesterday.
Chuu said in the study, which was published in the journal Physical Review Applied last month, that they had resolved the main obstacles for quantum computing development — high energy costs and a low-temperature operating environment.
Chuu said that photons are the smallest possible particle of electromagnetic energy, and his team had devised a way to encode information in 32time bins, or dimensions, of a single photon.
Photo: Hung Mei-hsiu, Taipei Times
Photons can be kept at a stable quantum state even at room temperature, he said.
Quantum computing is normally prone to information loss and calculation errors from vibrations or magnetic fields, he said.
However, photons have a more extended range of transmission, and they are less prone to interference, which contributes to a unique advantage when developing a commercialized quantum computer, he added.
Traditional computers enact computation on circuit boards, while quantum computing relays information through photonics and enacts computation using quantum physics.
The smallest unit of digital information in a traditional computer is the binary digit, or bit, which can only represent 0 or 1, Chuu said.
However, the quantum bit, or qubit, can be processed as both 0 and 1, a characteristic referred to as quantum superposition, he added.
Superposition enables quantum computing to process complex computations, such as prime factorizations or big data searches, up to 100 million times faster than traditional computers.
University president John Kao (高為元) said the paper’s publication in Physical Review Applied was an excellent milestone for quantum computing, as the device could operate at room temperature and was compact.
Kao said he remembered touring the US’ most advanced quantum computer lab last year.
He was struck by the enormity of the cooling system, which took up a whole room and kept temperatures at extremely low levels, Kao said.
Separately, the National Science and Technology Council has invited Alain Aspect, the 2022 Nobel Prize in Physics laureate, to attend this year’s Quantum Taiwan event, highlighting the nation’s focus on developing quantum technology.
The event would discuss quantum technology, superconducting quantum computers, quantum communications, quantum metrology, sensing and imaging.
National Science and Technology Council Minister Wu Cheng-wen (吳誠文) said quantum technology promises unforeseen computational abilities and could make communication safer.
The seminar is aimed at fostering international collaboration in creating a global platform to further develop quantum technology and ensure that Taiwan is an indispensable member of the global quantum technology development effort, Wu added.
Taiwan is projected to lose a working-age population of about 6.67 million people in two waves of retirement in the coming years, as the nation confronts accelerating demographic decline and a shortage of younger workers to take their place, the Ministry of the Interior said. Taiwan experienced its largest baby boom between 1958 and 1966, when the population grew by 3.78 million, followed by a second surge of 2.89 million between 1976 and 1982, ministry data showed. In 2023, the first of those baby boom generations — those born in the late 1950s and early 1960s — began to enter retirement, triggering
ECONOMIC BOOST: Should the more than 23 million people eligible for the NT$10,000 handouts spend them the same way as in 2023, GDP could rise 0.5 percent, an official said Universal cash handouts of NT$10,000 (US$330) are to be disbursed late next month at the earliest — including to permanent residents and foreign residents married to Taiwanese — pending legislative approval, the Ministry of Finance said yesterday. The Executive Yuan yesterday approved the Special Act for Strengthening Economic, Social and National Security Resilience in Response to International Circumstances (因應國際情勢強化經濟社會及民生國安韌性特別條例). The NT$550 billion special budget includes NT$236 billion for the cash handouts, plus an additional NT$20 billion set aside as reserve funds, expected to be used to support industries. Handouts might begin one month after the bill is promulgated and would be completed within
NO CHANGE: The TRA makes clear that the US does not consider the status of Taiwan to have been determined by WWII-era documents, a former AIT deputy director said The American Institute in Taiwan’s (AIT) comments that World War-II era documents do not determine Taiwan’s political status accurately conveyed the US’ stance, the US Department of State said. An AIT spokesperson on Saturday said that a Chinese official mischaracterized World War II-era documents as stating that Taiwan was ceded to the China. The remarks from the US’ de facto embassy in Taiwan drew criticism from the Ma Ying-jeou Foundation, whose director said the comments put Taiwan in danger. The Chinese-language United Daily News yesterday reported that a US State Department spokesperson confirmed the AIT’s position. They added that the US would continue to
One of two tropical depressions that formed off Taiwan yesterday morning could turn into a moderate typhoon by the weekend, the Central Weather Administration (CWA) said yesterday. Tropical Depression No. 21 formed at 8am about 1,850km off the southeast coast, CWA forecaster Lee Meng-hsuan (李孟軒) said. The weather system is expected to move northwest as it builds momentum, possibly intensifying this weekend into a typhoon, which would be called Mitag, Lee said. The radius of the storm is expected to reach almost 200km, she said. It is forecast to approach the southeast of Taiwan on Monday next week and pass through the Bashi Channel