PRESS-NEWS.org - Press Release Distribution
PRESS RELEASES DISTRIBUTION

Quantum photonic technologies set to be more reliable with new interferometer.

Quantum photonic technologies set to be more reliable with new interferometer.
2024-05-23
(Press-News.org) An increasing number of emerging quantum applications operate using optical technologies. Essentially, photons carry information at the speed of light and over long distances, making them good candidates for fast and secure communications and quantum computing. Many of these applications require photons that are identical (indistinguishable). When the photons are not identical, it can lead to errors in the data and quantum technologies become less reliable.

Currently, quantum photon sources are regularly taken offline to be tested and adjusted using an interferometer. This requires comparing photons multiple times using different configurations, a process that is time consuming and requires relatively bulky equipment that can accommodate the various physical arrangements.

Real-time analysis of photon indistinguishability that can be conducted within a device while it operates could improve the precision of quantum technologies.

Researchers at TMOS, the ARC Centre of Excellence for Transformative Meta-Optical Systems, have designed and demonstrated a new device that uses an ultra-thin metasurface to do all the necessary measurements in a single pass. The work was reported today in Optica.

Co-lead author Jihua Zhang says, “This metasurface-enabled multiport interferometer can determine if a photon pair’s properties are identical in a single shot. It doesn’t need multiple measurements using phase or time delays because the multiport structure allows the device to run measurements concurrently. This enables realtime and accurate characterization.”

One essential advantage is that this multiport interfrerometer is single-element, which not only reduces the size but also make it ultrastable when compared with previous multiport interferometers in the free-space optical setup. The use of meta-optics further decreases the size, weight and power of the device, as well as the cost of production. Flat optics, as meta-optics has become known, is key to miniaturising optical systems, which will in turn lead to the miniaturisation of devices we use day to day. It

Co-lead author Jinyong Ma says, “We created a static, dielectric metasurface grating without any reconfigurable elements. The grating was designed using multi-factor topology optimization, which is essentially adjusting the surface pattern so that it interacts with light in a specific way. After successful simulations, fabrication and a one-off calibration, we were able to successfully characterise the similarity of the photons’ spatial mode, polarization and spectra.”

Chief Investigator Andrey Sukhorukov, who leads the research from the Australian National University, says, “The success of our experimental trials suggests that the work could be further developed to also measure the indistinguishability of other photon properties, such as orbital angular momentum. It could underpin ultracompact and power-efficient optical elements that would be especially suited for portable and satellite-based free space quantum photonic technologies.”

For more information about this research, contact connect@tmos.org.au

END

[Attachments] See images for this press release:
Quantum photonic technologies set to be more reliable with new interferometer.

ELSE PRESS RELEASES FROM THIS DATE:

Future climate impacts put whale diet at risk

Future climate impacts put whale diet at risk
2024-05-23
A new study led by Griffith University predicts that future climate change impacts could disrupt the krill-heavy diet that humpback whales in the southern hemisphere consume.  Dr Jasmin Groß, who conducted the study as a PhD candidate at Griffith’s Centre for Planetary Health and Food Security analysed fatty acids and stable isotopes from blubber and skin samples of five different humpback whale populations around the southern hemisphere.   These levels were then compared to those of their primary prey item, Antarctic krill.  The team found that although there were distinct differences in the biochemical profiles, the diet of all tested ...

How a landscape intervention method can be used to address inequalities in electronic waste treatment process?

How a landscape intervention method can be used to address inequalities in electronic waste treatment process?
2024-05-23
The rapid development of electronic technology has resulted in the annual phase-out of a large amount of waste electrical and electronic equipment, known as “e-waste,” especially in developed countries. In the context of economic globalization, the lack of relevant environmental laws and policies in developing countries and less developed countries, as well as cheap labor, has attracted developed countries to export a large amount of domestic e-waste to these countries. The chemicals produced during the low-tech dismantling process enter the air, soil, and deep groundwater, contaminating ...

UChicago partners with UMass on NSF expedition to elevate computational decarbonization as a new field in computing

2024-05-23
A team of researchers from the University of Chicago has been named winners of the 2024 NSF CISE Expedition Program for their part in the proposal of computational decarbonization (CoDec). This prestigious award, granted by the National Science Foundation (NSF), underscores the groundbreaking potential of CoDec in revolutionizing societal decarbonization through computational innovation.   As the largest research award within the NSF's Computer and Information Science and Engineering (CISE) directorate, the Expeditions in Computing program recognizes pioneering endeavors poised to make profound impacts on both scientific understanding and societal advancement. The CoDec ...

Epidural linked to reduction in serious complications after childbirth

2024-05-23
Having an epidural during labour is associated with a marked reduction in serious complications in the first few weeks after giving birth, finds a study published by The BMJ today.  Doctors refer to these complications as severe maternal morbidity (SMM), which can include heart attack, heart failure, sepsis, and hysterectomy.  Epidural analgesia is recommended for women with known risk factors for SMM, such as obesity, certain underlying conditions, or having more than one baby. These women are said to have a ‘medical indication’ for epidural analgesia in labour. Women delivering prematurely ...

Safety fears for England’s screening services if national oversight is lost

2024-05-23
Plans to devolve responsibility for the quality of England’s 11 national screening services could result in significant safety risks, experts tell The BMJ in an exclusive report today. Assistant news editor Gareth Iacobucci explains that NHS England is currently discussing proposals to delegate some of the functions of the national Screening Quality Assurance Service (SQAS) from NHSE to regional Integrated Care Boards (ICBs). But concerned experts warn that devolving responsibility to local organisations will spread resources more thinly, lead to a loss of expertise and independence, and compromise ...

Preteens use dating apps, and 1 in 4 are sexual minorities

2024-05-22
Though most online dating apps have a minimum age requirement of 18 years, a new study finds a small number of 11 to 12 year-olds use them. Lesbian, gay, and bisexual (LGB) preteens are 13 times more likely to report engaging in online dating compared to their heterosexual peers. “Lesbian, gay, or bisexual adolescents, including preteens, may have limited romantic partner options in their schools, where they may also face discrimination, bullying, and stigma because of their sexual orientation,” says lead author Jason Nagata, MD, associate professor of pediatrics at ...

Merkin Prize in Biomedical Technology awarded to F. William Studier for development of widely used protein- and RNA-production platform

2024-05-22
F. William Studier of Brookhaven National Laboratory has won the second annual Richard N. Merkin Prize in Biomedical Technology for his development of an efficient, scalable method of producing RNA and proteins in the laboratory. His T7 expression technology can be used to make large quantities of nearly any RNA or protein and has been for decades, and continues to be, a mainstay of biomedical research and pharmaceutical production. The approach has been used to produce numerous therapeutics, diagnostics, and vaccines — including the COVID-19 mRNA vaccines credited with extending millions of lives in recent years.  “F. William ...

Geisinger funding renewed for familial hypercholesterolemia research

2024-05-22
DANVILLE, Pa. – Geisinger has been awarded $3 million from the National Heart, Lung and Blood Institute of the National Institutes of Health to continue its research on familial hypercholesterolemia (FH). The new funding will build on Geisinger’s ongoing work to improve communication with patients with FH and their family members and increase early screening and diagnosis. FH is an inherited condition that causes high levels of low-density lipoprotein (LDL) cholesterol, often referred to as “bad cholesterol.” Left untreated, high ...

Solar physicists unlock the key to how sunspots form—and much more

2024-05-22
A team of solar scientists have uncovered the possible originals of the engine that drives much of the sun’s volatile nature—generating the sunspots that move like storm clouds over the surface and causing the sun’s activity levels to rise and fall over 11-year cycles. The secret behind this engine, also known as the “solar dynamo,” may be among the oldest “unsolved problems of physics,” said Benjamin Brown, a solar physicist at CU Boulder. In new research, he and his colleagues used mathematical equations ...

Stroke-care metrics improve with stroke center certification and coordinators

Stroke-care metrics improve with stroke center certification and coordinators
2024-05-22
Key stroke-care metrics improve at telestroke hospitals with stroke center certification and stroke coordinators. That’s what NORC researchers at the University of Chicago found when they conducted an external evaluation of the telestroke program at the Medical University of South Carolina. NORC, which stands for National Opinion Research Center, and MUSC researchers report their findings in the Journal of Stroke & Cerebrovascular Diseases. Mithuna Srinivasan, Ph.D., principal research scientist at NORC, is the lead author of the article and MUSC telestroke and telehealth experts Christine Holmstedt. D.O., Jillian Harvey, Ph.D., ...

LAST 30 PRESS RELEASES:

How can we reduce adolescent pregnancies in low- and middle-income countries?

When sun protection begets malnutrition: vitamin D deficiency in Japanese women

Cannabis use can cause chromosomal damage, increasing cancer risk and harming offspring

Survey finds many Americans apply misguided and counterproductive advice to combat holiday weight gain

New study reveals half a century of change on Britain’s iconic limestone pavements

Green flight paths could unlock sustainable aviation, new research suggests

Community partners key to success of vaccine clinic focused on neurodevelopmental conditions

Low-carbon collaborative dual-layer optimization for energy station considering joint electricity and heat demand response

McMaster University researchers uncover potential treatment for rare genetic disorders

The return of protectionism: The impact of the Sino-US trade war

UTokyo and NARO develop new vertical seed distribution trait for soybean breeding

Research into UK’s use of plastic packaging finds households ‘wishcycle’ rather than recycle – risking vast contamination

Vaccine shows promise against aggressive breast cancer

Adverse events affect over 1 in 3 surgery patients, US study finds

Outsourcing adult social care has contributed to England’s care crisis, argue experts

The Lancet: Over 800 million adults living with diabetes, more than half not receiving treatment, global study suggests

New therapeutic approach for severe COVID-19: faster recovery and reduction in mortality

Plugged wells and reduced injection lower induced earthquake rates in Oklahoma

Yin selected as a 2024 American Society of Agronomy Fellow

Long Covid could cost the economy billions every year

Bluetooth technology unlocks urban animal secrets

This nifty AI tool helps neurosurgeons find sneaky cancer cells

Treatment advances, predictive biomarkers stand to improve bladder cancer care

NYC's ride-hailing fee failed to ease Manhattan traffic, new NYU Tandon study reveals

Meteorite contains evidence of liquid water on Mars 742 million years ago

Self-reported screening helped reduce distressing symptoms for pediatric patients with cancer

Which risk factors are linked to having a severe stroke?

Opening borders for workers: Abe’s profound influence on Japan’s immigration regime

How skills from hospitality and tourism can propel careers beyond the industry

Research shows managers of firms handling recalls should review media scrutiny before deciding whether to lobby

[Press-News.org] Quantum photonic technologies set to be more reliable with new interferometer.