![]() 'No siren, no alarms, no nothing': Hawaii governor reveals terrifying '1,000-degree' fire tornados tore through Maui's buildings killing 93 people - as it emerges the island warning sirens DID NOT go off.No special treatment: Oprah's CBS camera crew are refused entry to Maui wildfire shelter 'out of respect for survivors seeking safety' - days after star handed out supplies at same location.Legionella bug reported 'three days before evacuation' it was claimed tonight after 39 asylum seekers were taken off Bibby Stockholm barge.JONATHAN MILLER: Giving cash to Macron is help tackle small boats crossings is a triumph of hope over experience.Still queuing for the dinghy gangs: Just a day after six people died crossing the Channel, dozens of migrants are seen heading for the coast in their desperate quest to reach Britain.Students brace for the 'worst ever year' amid tougher grades, strikes and a housing crisis as dropout rate surges. ![]() Want to save your marriage? Stop phubbing your husband!.Motoring expert reveals her three top tips to drive down your car insurance by hundreds.Girl, five, left with 'significant injuries to her face' after being attacked by a dog outside supermarket.Parents outraged by woke style guide from Scout leaders which condemns terms including 'Girl Guides' and 'postmen'.Stalker brother of Simple Minds singer Jim Kerr is jailed again for continuing to terrorise a superfan of the band and his wife while behind bars with murder threats and child rape claims.and yet she accused ME of destroying our marriage: The ex-husband of Kandice Barber describes how he had to move on from the heartbreak and utter humiliation after she was jailed for six years My teacher wife slept with a 15-year-old pupil in a field.Additionally, scientists believe that simulation of unusual states of matter will be an important early application of quantum computing, and there are few more unusual states of matter than those found in the vicinity of black holes. "One day, we may even be able to use rotating black holes as quantum computers by sending photons on the right trajectory around these ghostly astronomical bodies," Racorean concludes. This topic may seem esoteric, but it could have practical applications. "If we find that the X-ray polarisation changes with distance from the black hole, with those in the central region being least polarised, we will have observed entangled states that can carry quantum information," says Racorean. These will investigate the polarisation of all X-rays found in space, including those emitted close to black holes. Two space probes with the same mission will be launched around 2022: the Imaging X-ray Polarimetry Explorer (IXPE) by NASA, and the X-ray Imaging Polarimetry Explorer (XIPE) by the European Space Agency. ![]() The final proof will come when the properties of X-rays near spinning black holes are observed, which could happen in the next decade. Thus far, however, this process is only a prediction. "It now seems that the curvature of spacetime around a black hole will play the same role as this apparatus." "Lab-based researchers already use beam splitters and prisms to entangle these properties in X-ray photons and process quantum information," says Racorean. ![]() Each of these can encode a qubit (quantum bit) of information, the standard information unit in quantum computing. The photons that make up the X-rays have two properties: polarisation and orbital angular momentum. Powerful forces acting on accretion disks raise their temperature so they emit X-rays, which can act as carriers of quantum information. Material that gets close to a rotating black hole but does not fall into it will aggregate into a circular structure known as an accretion disk. If the star that forms it rotates, as most stars do, the black hole will also spin. Some may collapse into a point with essentially no volume and infinite density, with a gravitational field that not even light can escape from: this is a black hole. When stars come to the end of their lives, they can collapse in on themselves under their own weight, becoming denser and denser. The term 'black holes' is widely known, but not everyone knows exactly what they are.
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